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问题
判断题
分子取向程度与塑料制品的厚度大小无关。
答案
参考答案：错
选择题
Cui Jianping who gave his life to save a girl in America ten years ago was _____ honour to our school.A memorial is held here every year in _____ honour of him.
A. an; the
B. an; /
C. the; the
D. /; /
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单项选择题
对于发电机应检查整流管是否（）。
A.穿孔
B.击碎
C.击穿
D.破损
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