为了防止轴箱脱出，在有导框轴箱定位的导框下面安设了（）。
A.摩擦片
B.托板
C.止钉
D.防缓铁丝
参考答案：A
— We didn't see you at this morning's meeting.
— ______, but if I hadn't had to meet a friend, I would have been there. [ ]
A. I'm sorry
B. Me, too
C. Never mind
D. Thank you
下列与“惟坚韧者始能遂其志”哲理一致的是
A．千里之堤，毁于蚁穴
B．卧薪尝胆，三千越甲可吞吴
C．中河失舟，一壶千金
D．愚者千虑，必有一得
