单项选择题

All equipment in an aircraft must______.

A．be tested to destruction
B．not be too light in weight
C．work especially well at high temperatures
D．work perfectly within a wide range of temperatures

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热门试题

单项选择题

The maximum possible weight of an aircraft is determined by______.

A．the engine power
B．the amount of freight room
C．the number of passengers
D．international regulations

单项选择题

The passage suggests that______.

A．it was due to Jim that George was found guilty
B．Jim did not do exactly what George asked him to do
C．Jim asked his colleagues to recommend mercy
D．Jim persuaded the jury to lighten George's punishment