更多"The machine must be kept within a t"的相关试题:
[单项选择]Ostrich chicks reared on farms
A must be kept in incubators until mature.
B are very independent.
C need looking after carefully.
[单项选择]Batteries must be kept in dry places in case electricity should leak away.
A. 电池应该放在干燥的地方，以防漏电。
B. 电池放在干燥的地方，才会漏电。
C. 电池必须放在干燥的地方，这样的话电会漏掉。
D. 电池应该放在通风的地方，以防电泄漏。
[单项选择]______ was said have must be kept secret.
A. Whatever
B. Whichever
C. However
D. That
[单项选择]Those two ideas must be kept ______ one from the ether.
A. distinctive
B. distinguished
C. disguised
D. distinct
[单项选择]To ______ the temperature of the new machine, the researchers had to work for hours.
A. turn
B. measure
C. find
D. investigate
[单项选择]They （） until the bell rang.
A. stopper on shout
B. stopped shouting
C. didn’t stop shouting
D. didn’t stop shout
[单项选择]Not until the bell rang （） in.
A. do they come
B. came they
C. did they come
D. they came
[单项选择]Scarcely（）asleep when the phone rang.
A. had I fallen
B. I had fallen
C. fell I
D. I fell
[单项选择]______ when the telephone rang
A. Were sleeping
B. Did you sleep
C. Have you slept
D. Were you sleeping
[单项选择]When the bell rang announcing the end of class, students came out ______.
A. by twos and threes
B. by two and three
C. by two or three
D. by twos or threes
[单项选择]Taylor rang—order for desks held up by strike. They expect to despatch them on 10th May. What is the problem with the order
