桥式起重机的司机室地板应铺橡胶或其他绝缘材料。
参考答案：对
She is so _____ that she cried for days when her pet rabbit died.
A．sensitive
B．sensible
C．imaginative
D．impressive
细刮时刀痕宽度约为6～12mm，长约（）～25mm，按一定方向依次刮研。
A.10
B.15
C.18
D.20
