前置型游梁式抽油机上冲程时,曲柄旋转约()。A、165° B、180° C、195°

题型:单项选择题

问题:

前置型游梁式抽油机上冲程时,曲柄旋转约()。

A、165°

B、180°

C、195°

D、215°

考点:采油工考试采油高级工考试采油高级工考试题库
题型:单项选择题
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