在相同条件下平皮带传递的功率()V带传递的功率。
A.大于
B.等于
C.小于
D.不一定
参考答案:C
There was such a long queue for coffee at the interval that we ________ gave up.[ ]
A. eventually
B. unfortunately
C. generously
D. purposefully
在时标网络计划中,波浪线表示总时差。