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【单选题】
测量精度为 mm的游标卡尺,当两测量爪并拢时,尺身上19mm对正游标上的20格。A.
0.01
B.
0.02
C.
0.05
D.
0.10
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举一反三
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A.
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B.
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D.
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【简答题】Mary likes sports. Her school sports meet will be held on May 4th. She entered for the high jump and long jump, and the other girls in her class are sure she will win both. But ten days before the sch...
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