题目内容

粗粉分离器的工作原理有（）

A. 重力
B. 离心力
C. 惯性力

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The fax__________(发送给) Mr. Black, the General Manager of Ski Company.

The subject of the fax is about___________(订货单).

. I believe you have received our catalog and___________(价目单).

. For your convenience I’ve enclosed an order form__________ (和传真一起) .