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问题
判断题
检修是清除的FeS要用土埋好，以防自燃。
答案
参考答案：对
补全对话，情景问答
Read and match.
( )1. Where is the pen?
( )2. Look! What's that?
( )3. Who's that?
( )4. Where is Miss Wang?
( )5. How are you?
( )6. Who's she?
A. She is my mother
B. It's in the desk.
C. It's a kite.
D. Fine, thank you.
E. That's Bob.
F. She's in the office.
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单项选择题
钻井液离心机处理非加重钻井液，可以除去（）约有害固相。
A.2μm以下
B.2μm以上
C.3μm以上
D.5μm以上
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