-Would you like ______ apples, please?
-Yes, please.[ ]
A. much
B. a lot
C. some
答案:C
套管刮削器下井前,一定要按接头的()要求与下井管柱上紧。
A.实际
B.现场
C.经验
D.上紧力矩
混凝土外加剂细度试验中天平称量样品需要精确至0.0001