判断题

平静呼吸时，吸气和呼气都消耗能量。

答案：错误

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Thewriter should pay attention to the wording and expression in theletter replying to the counter offer, so that the letter looks aspolite and thoughtful as possible.( )

答案：正确

不定项选择

高校教学楼的载客电梯都属于三级负荷。

A．正确
B．错误