题目内容

混凝土试件相邻面夹角公差靠试模相邻面夹角控制。()

A. 正确
B. 错误

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混凝土试件制作前，应在试模内表面涂一薄层矿物油或脱模剂。()

A. 正确
B. 错误

He hadn't _______ quite what was wrong with .his mother. He knew, though, that she hadn't

A. worked off
B. worked on
C. worked out
D. worked at

前牙深覆牙合，面下1/3过低

维生素B1经口给予的剂量(mg)为

A. 3
B. 4
C. 5
D. 8
E. 10