同一种型号的变速箱，拉式变速箱与推式变速箱，相同的零件有（）
A. 输入轴
B. 输入轴端盖总成
C. 一轴齿轮
D. 分离轴承
查看答案
事故拉线开关是输煤值班员用来随时停止设备的。
A. 正确
B. 错误
联合国的重要机关有大会、()、经济及社会理事会、()、()、秘书处。
瘢痕性类天疱疮在口腔中病损的最常见部位是（）
A. 牙龈
B. 下唇
C. 软腭
D. 上腭
E. 颊黏膜
During the manufacture of line，yarns are twisted together in the（）.
A. opposite direction from which the fibers are twisted together to form strands
B. same direction the fibers are twisted to form strands
C. opposite direction from which the fibers are twisted together to form the line
D. opposite direction from which the fibers are twisted together forming cable
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