两齿辊的轴向窜动量最大不得超过()。
A、5mm
B、10mm
C、15mm
参考答案:A
The beggar the boy out of his money. [ ]
A. fooled
B. fool
C. foolish
D. be fooled
__________ she couldn't understand was__________ fewer and fewer students showed interest
in her lessons.
A.What; why
B.That ; what
C.What ; because
D.What;which