()能够防止钢丝绳在传动过程中脱离滑轮槽而造成钢丝绳卡死和损伤。
A.力矩限制器
B.超高限制器
C.吊钩保险
D.钢丝绳防脱槽装置
参考答案:D
急性心肌梗死心肌坏死的心电图改变是:()
A.ST段下移
B.ST段明显上抬,呈弓背向上的单向曲线
C.T波高耸
D.T波倒置
E.异常深而宽的Q波
Your desk is crowded with too many unnecessary things, including used papers and books.You'd better ________ some of them.[ ]
A. remain
B. resist
C. remove
D. renew