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【单选题】
图样上所标注的尺寸是( )A.
放大或缩小比例的尺寸
B.
机件图样尺寸
C.
机件实际尺寸
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皮皮学刷刷变学霸
举一反三
【单选题】听力原文： When people succeed, it is because of hard work, but luck has a lot to do with it, too. (29) Success without some luck is almost impossible. The French emperor Napoleon said of one of his genera...
A.
Hard work is the most important thing for one's success.
B.
Hard work may invite good luck.
C.
Good luck plays an important role in one's success,
D.
Success has nothing to do with luck.
【简答题】关于经济作物，以下（ ）不属于嗜好作物。
【单选题】腹腔镜胆囊手术全麻术前准备,不正确的是
A.
常规术前禁食禁饮
B.
留置胃管，尿管
C.
术前用抗酸药和H2受体拮抗剂，以减轻误吸危害
D.
术前用麻醉性镇痛药，以减轻术中牵拉反应，减少麻醉药用量
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