阀门的阀芯、阀座研磨工艺的步骤有粗磨、中磨、()。
A、精磨、细磨;
B、细磨、精磨;
C、快磨、慢磨;
D、慢磨、快磨。
参考答案:B
For the success of the project, the company should ______ the most of the opportunities at hand.
A.obtain
B.grasp
C.catch
D.make
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