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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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

According to the passage, which of the following statements is TRUE about the jury

A．The jury sent Jim to prison for a long time.
B．The jury visited Jim in prison.
C．There were eleven people on the jury.
D．There were twelve people on the jury.