第八章测试
1.我们能感觉出加速度—速度的增加,但是我们感觉到它的时间是短暂的。例如,在飞机起飞时的滑动期间,我们就感觉到这种加速度。( )
A:We can feel acceleration, an increase in speed, but only for a short period of time, such as during the take-off run of an airliner.
B:We can feel acceleration, an increase in speed. But we notice it for only a short time. For instance, we feel it during the take-off run of an airliner.

答案:A
2.热水瓶是由两层很薄的玻璃构成的。在两层玻璃之间是一个真空。所谓真空是指在两层玻璃之间的空气以及其他一切东西都抽掉了。( )。
A:A thermos flask consists of two very thin walls of glass. There is a vacuum between the two glass walls. The so-called vacuum means that the air and everything else has been extracted.
B:A thermos flask consists of two very thin walls of glass with a vacuum between them, which means that the air and everything else has been extracted.
3.地铁乘客近来大量增加了。其原因是公共汽车的乘客由于怕公共汽车不可靠转移到了地铁。( )
A:The passengers carried on the underground have increased greatly in recent time. The reason for that passengers have been transferring from the buses to the underground because the buses are unreliable.
B:The recent great increase in passengers carried on the underground is due to the transfer of passengers from the buses because of unreliability.
4.导流洞进出口围堰拆除爆破技术( )
A:Blasting Technology for Demolition of Cofferdams at Inlet and Outlet of Diversion Tunnel
B:Blasting Technology for Demolition of Cofferdams of Inlet and Outlet of Diversion Tunnel
5.这种新型转叶式水轮机已经投入生产,它造价低,体积小,功效高。( )
A:The new type of blade runners, which costs cheap with small size and efficient power, has been put into production.
B:The new type of blade runners, cheap, small, efficient, has been put into production.

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