下列操作属于ISM规则中所指的特殊操作的有（）。
A.油船的货物操作
B.加油操作和港内驳油操作
C.集装箱、货物及其物品的绑扎
D.B+C
参考答案：D
.---_____ I watch TV, I’ll turn it down and never make any noise.
--- Good. ______ you are doing should never disturb others. _______ how important you are,never forget about how others feel.
A．Whatever; Whenever; No matter
B．Whenever; Whatever; No matter
C．Whether; Whatever; 不填
D．No matter; Whenever; 不填
异步电动机的转速总是旋转磁场的转速。（）
A.大于
B.等于
C.小于
