开口传动用于两轴平行并且旋转方向相同的场合,可以传递的功率()。
A.很小
B.较小
C.较大
参考答案:C
—Mr. Gao, I don’t understand the meaning of this new word.
—You can __________ the word in your dictionary. I believe you can understand it well.
A.look at
B.look for
C.look up
D.look after
人人网的估值只能选择参考微博市盈率。