— May I speak to Tom?    

— Sorry, he _____ Italy. But he _____ in two weeks. [ ]

A. has been to, will come back

B. has gone to, will be back

C. has been to, would come back

D. has gone to, won't come back

轨道吊司机在停止各机构动作前应（），不准单纯依靠行程开关和停止限位停止各机构动作。

A、断掉控制电

B、锚定

C、逐挡减速

D、打开旁路开关