防坠安全器上安全开关的功能是安全器动作后,立即将()制动器制动。
A.安全门打开
B.层门关闭
C.电动机的电路断开
D.施工升降机电源断开
参考答案:C
---How do you think of Steve Jobs who succeeded in creating the empire of Apple?
---I think the most important is that he had intelligence ______the ordinary.
A.like
B.for
C.beyond
D.than
Life insurance, before available only to young, healthy persons, can now he obtained from old people, and even for pets.
A.before young, healthy persons available only
B.available only to young, healthy persons before
C.available only to persons young, but more healthy
D.before young and healthy persons only available to