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【判断题】
用水设备和管道内结构的原因是加热后水中的钙镁离子受热会析出,与水中的碳酸根离子结合形成沉淀。A.
正确
B.
错误
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举一反三
【单选题】___________ , l would have gone to see him.
A.
Have l had time
B.
Had l time
C.
Had l had time
D.
Would l have time
【简答题】_____ had enough time, they would have visited the Great Wall. A) Had they B) Have they C) Would they have D) If they
【单选题】I could have done it better if I ______ more time.
A.
have had
B.
had
C.
had had
D.
will have had
【简答题】Watch the video and arrange the s into chronological order. Use number 1-5 to fill in the blanks and mark the sequence. Marie earned Physics and Mathematics degrees. ________
【单选题】The boys ________ two subjects last term, but this term they _____five. A. have, have B. had, had C. have, had D.
A.
have, have
B.
had, had
C.
have, had
D.
had, have
【判断题】某钢尺经检定,其实际长度比名义长度长 0.01m ,现用此钢尺丈量 10 个整尺段距离,如不考虑其它因素,丈量结果将比实际长度长了 0. 1m 。
A.
正确
B.
错误
【简答题】骨骼肌纤维中的三联体是_ _和两侧的__ _的合称。它位于__ ___。
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