单项选择题

The author seems to feel that most companies______.

A．will be on computers within five years
B．lose money whenever the computers go down
C．have trouble making the conversion to computers
D．do not save money by using the computer

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热门试题

单项选择题

The stress man's job is to______.

A．test how safe the plane is
B．calculate how strong each part must be
C．work out what height the plane may fly at
D．control the amount of luggage each passenger may carry

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