齿轮传动机构装配要保证齿面有一定的接触面积和正确的接触位置。
参考答案:对
He doesn't seem to be aware of the coldness of their ______ towards his suggestion. [ ]
A. altitude
B. identity
C. attitude
D. expression
制定我国教育目的的理论依据是()。
A.我国社会发展现状
B.教育的方针和政策
C.教育学相关理论
D.马克思主义关于人的全面发展学说