题目内容

电源输出的功率的大小由负载的大小来决定。

A. 对
B. 错

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负载增加指电阻值增加。

A. 对
B. 错

What are included in a welcome speech?

A. Greeting
B. Time change
C. Arraignment for the next few days
D. The scene on the way

When arriving at the airport, the tour guide should go to the airport lobby and reconfirm the arrival time.

A. 对
B. 错

The tour guide should get on the bus firstly and count the number of tourists.

A. 对
B. 错