更多"In an automated highway system, all"的相关试题:
[单项选择]In an automated highway system, all the driver needs to do is ___________.
A. keep in the right lane
B. wait to arrive at his destination
C. keep in constant touch with the computer center
D. inform the system of his destination by phone
[单项选择]
What might driving on an automated highway be like The answer depends on what kind of system is ultimately adopted. Two distinct types are on the drawing board. The first is a special-purpose lane system, in which certain lanes are reserved for automated vehicles. The second is a mixed traffic system: fully automated vehicles would share the road with partially automated or manual driven cars. A special-purpose lane system would require more extensive physical modifications to existing highways, but it promises the greatest gains in freeway (高速公路) capacity.
Under either scheme, the driver would specify the desired destination, furnishing this information to a computer in the car at the beginning of the trip or perhaps just before reaching the automated highway. If a mixed traffic system was in place, automated driving could begin whenever the driver was on suitably equipped roads. If special-purpose lanes were available, the car could enter them and join existing traffic
A. are being planned
B. are being modified
C. are now in wide use
D. are under construction
[单项选择]Virtually all (parts moving) of an automobile (need to be) lubricated (because), without lubrication, friction (would increase) power consumption and damage the parts.
A. parts moving
B. need to be
C. because
D. would increase
[单项选择]All the planets in the Solar system except Mercury and Venus have natural satellites, — objects that revolve around the planets.
A. ( which
B. ( which are
C. ( of which
D. ( and which
[单项选择]The most critical thing Afghanistan government needs to do is to ______.
A. build more highways just in the areas of Kabul
B. tighten up the security around the whole country
C. make sure of the stability of the interim government
D. draw up the outlines understood by the public
[单项选择]Of all the planets in this solar system, Mercury is {{U}}nearest{{/U}} the Sun.
A. most like
B. closest to
C. hotter than
D. heavier than
[单项选择]According to the passage, trees were initially needed by the Nebraskan settlers for ______.
A. shade
B. the prevention of soil erosion
C. the creation of parks
D. construction