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Modern navigation systems, which are found in most of todays

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Modern navigation systems, which are found in most of todays [#permalink] New post 25 Jun 2004, 10:42
00:00
A
B
C
D
E

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(N/A)

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0% (00:00) correct 0% (00:00) wrong based on 1 sessions
2. Modern navigation systems, which are found in most of today’s commercial aircraft, are made with low-power circuitry, which is more susceptible to interference than the vacuum-tube circuitry found in older planes. <During landing, navigation systems receive radio signals from the airport to guide the plane to the runway>. Recently, one plane with low-power circuitry veered off course during landing, its dials dimming, when a passenger turned on a laptop computer. <Clearly, modern aircraft navigation systems are being put at risk by the electronic devices that passengers carry on board, such as cassette players and laptop computers>.

The two portions in boldface play which of the following roles?


(A) The first is a principle that the argument relies on and the second is a conclusion that can be drawn from the first.
(B) The first is a fact that argument relies on and the second is a conclusion that must be drawn from this argument.
(C) The first acknowledges a consideration that supports that main position; the second is that conclusion.
(D) The first is an evidence that supports the conclusion, the second is that conclusion.
(E) The first is a principle that is necessary for this argument, the second is a conclusion that could be drawn from this argument
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 [#permalink] New post 25 Jun 2004, 11:24
ans E...

first BOLD face... -->navigation systems help in the landing of the plane on the run-way

second BOLD face...--> navigation systems are ineterfered in their functioning by electronic devices ''

first one= premise and principle told...

second one= cretainly the conlcusion...

A) parlty right as for the frst part but certainly we cannot get the conclusion from the FISRT bold face alone....

B)very close ... but it s too extreme when it says ''argument rlies on ''and 'must b drawn'' if I m wrong this cud be the right ans...

C ) incosistent and cofusing...

D) partly wrong... the frst does noway support the conclusion...

only E goes right when it says'' frst= a principle , seocnd= a conclusion that can be derived ''...

hope that helps!

Have fun :-D
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Re: CR_BF2 [#permalink] New post 25 Jun 2004, 11:58
boksana wrote:
2. Modern navigation systems, which are found in most of today’s commercial aircraft, are made with low-power circuitry, which is more susceptible to interference than the vacuum-tube circuitry found in older planes. <During landing, navigation systems receive radio signals from the airport to guide the plane to the runway>. Recently, one plane with low-power circuitry veered off course during landing, its dials dimming, when a passenger turned on a laptop computer. <Clearly, modern aircraft navigation systems are being put at risk by the electronic devices that passengers carry on board, such as cassette players and laptop computers>.

The two portions in boldface play which of the following roles?


(A) The first is a principle that the argument relies on and the second is a conclusion that can be drawn from the first.
(B) The first is a fact that argument relies on and the second is a conclusion that must be drawn from this argument.
(C) The first acknowledges a consideration that supports that main position; the second is that conclusion.
(D) The first is an evidence that supports the conclusion, the second is that conclusion.
(E) The first is a principle that is necessary for this argument, the second is a conclusion that could be drawn from this argument


Another difficult one.

It looks like B to me.

During landing, navigation systems receive radio signals from the airport to guide the plane to the runway - to me, that sounds like a fact. The author tells us what happens during landing, there's no doubt that this is the way it happens.

Clearly, modern aircraft navigation systems are being put at risk by the electronic devices that passengers carry on board, such as cassette players and laptop computers - this sounds like a conclusion to me, and it must be drawn from the argument, there's no alternative course for this argument to run.

Fact 1 - navigation systems made with low-power circuitry
Fact 2 - low-power circuitry is more susceptible to interference
Fact 3 - when landing, planes receive radio signals

Evidence 1 - plane steered off course during landing, because a laptop was turned on

Assumption - use of laptops & other electronic equipment interferes with the low-power circuitry

Conclusion - modern aircraft navigation systems are being put at risk by the electronic devices [that interfere with low-power circuitry while the plane receives radio signals during landing]that passengers carry on board
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 [#permalink] New post 25 Jun 2004, 12:08
To me E sounds better

No where in the passage is it stated that the laptop computers and the personal items belonging to passengers interfere with the system. They could be ASSUMED to do so and hence this is one of the conclusions that can be drawn.

It could be that when plane was landing there were other equipments that malfunctioned because of the laptop.

For this conclusion to be drawn absolutely certainly, there should be a fact that states that these devices produce signals that interefere with low power circuitry
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Re: CR_BF2 [#permalink] New post 25 Jun 2004, 13:39
boksana wrote:
2. Modern navigation systems, which are found in most of today’s commercial aircraft, are made with low-power circuitry, which is more susceptible to interference than the vacuum-tube circuitry found in older planes. <During landing, navigation systems receive radio signals from the airport to guide the plane to the runway>. Recently, one plane with low-power circuitry veered off course during landing, its dials dimming, when a passenger turned on a laptop computer. <Clearly, modern aircraft navigation systems are being put at risk by the electronic devices that passengers carry on board, such as cassette players and laptop computers>.

The two portions in boldface play which of the following roles?


(A) The first is a principle that the argument relies on and the second is a conclusion that can be drawn from the first.
(B) The first is a fact that argument relies on and the second is a conclusion that must be drawn from this argument.
(C) The first acknowledges a consideration that supports that main position; the second is that conclusion.
(D) The first is an evidence that supports the conclusion, the second is that conclusion.
(E) The first is a principle that is necessary for this argument, the second is a conclusion that could be drawn from this argument


This one is not very difficult. I guess a course in Writing covers such questions.

During landing, navigation systems receive radio signals from the airport to guide the plane to the runway is a fact on which the argumet rests.
The first and the third sentences provide specific details/facts that build to a logical conclusion. Hence B.
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 [#permalink] New post 25 Jun 2004, 17:13
http://www.gmatclub.com/phpbb/viewtopic ... ght=#28240
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 [#permalink] New post 29 Jun 2004, 12:10
I don't think it's B. Without assumption the conclusion falls apart :roll:
I believe the answer should be E
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 [#permalink] New post 30 Jun 2004, 11:19
I also went with E on this one. What tipped me is that B states: "conclusion that must be drawn from this argument". However there could be other reasons why the plane's controls were off. I would've felt a lot more comfortable if B stated "conclusion that may be drawn from this argument".

I do acknowledge that the first statement is a fact, but what's wrong with calling it a principle?

Principle -- "A basic truth, law, or assumption"
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 [#permalink] New post 28 May 2005, 07:23
OA please ??
  [#permalink] 28 May 2005, 07:23
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