不定项选择

坡度故障调整部位的选择需掌握调整量小、效率高的原则。

A．正确
B．错误

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法律具有扭转社会风气、净化人们心灵、净化社会环境的社会性效益。
正确
错误

答案：正确

单项选择题

How could Forrest survive the Vietnam War?
A、Because of his excellent shooting skills.
B、Because of Lieutenant Dan’s help.
C、 Because of Bubba’s help.
D、Because of his fast running.