题目内容

T触发器具有保持和计数功能。

A. 对
B. 错

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A. 对
B. 错

A) The coach broke down on the way.
B)The coach will arrive soon.
C)The tour guide has already arrived.
D)The tour guide has contacted the driver.

A) The sales data.
B)The meeting agenda.
C)The price list.
D)The travel budget.

A) Cancel a reservation.
B)Change a room for him.
C)Give him a morning call.
D)Book a taxi.