对进出石家庄内陆港的合法集装箱运输车辆，征收的车辆通行费在按省政府批准的《我省收费公路载货车辆计重收费费率标准》计算的基础上给予()的优惠。

Some people are often surprised by what other people do. According to Berger, that is mainly because__________. 点击查看答案

凸轮的磨损程度可用( )测量凸轮的高度H来判断。

A、内径千分尺
B、外径千分尺
C、百分表

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