The expression "to take the rap" ______.
A. refers to something wrong or illegal
B. was used several hundred years ago
C. is similar to "to receive a bum rap"
D. indicates due responsibility
研磨工作要特别注意清洁卫生，否则使工件拉毛或拉出深痕。 ()
【C1】
A. a little
B. how much
C. how many
D. a lot
平衡架必须置于水平位置，具有光滑和坚硬的工作表面，以减少磨擦力，防止工件磨损。 ()
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