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【单选题】
外置式汽油压力调节器的作用是使油管中的汽油压力与进气歧管中的气体压力之间的压力差( )。A.
0k保持恒定
B.
随进气歧气体压力升高而升高
C.
进气歧气体压力升高而下降
D.
随喷油量的增加而增加
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【简答题】What is an e–reader? An e–reader is a small computer. It can hold thousands of e–books. So people want to throw away heavy schoolbags and read with small, light e–readers. For example, a US high...
【简答题】若电路中某元件两端的电压U=3n(314t-1800)伏,电流i=4sin(314t+1800)安,则该元件是电容。()
【单选题】What can a reader learn about in this text?
A.
the life of schoolchildren in Mongolia
B.
the difficulties for blind travellers
C.
the international work of some eye doctors
D.
the best way of studying medicine
【判断题】若电路中某元件两端的电压 u = 36sin(314t - 180 ° )V ,电流 i = 4sin(314t + 180 ° )A ,则该元件是电感元件。
A.
正确
B.
错误
【单选题】关节内有游离体会如何影响关节活动范围( )
A.
被动活动减少，主动活动不受影响
B.
被动活动不受影响，主动活动增多
C.
主动被动活动均不受影响
D.
主动被动活动均减少
E.
以上都不对
【单选题】By using signal words to ______ what may come next, the reader can decide whether he should speed up his reading, slow or pause to make sure what is being read is understood.
A.
presume
B.
present
C.
precede
D.
predict
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