按Fanger的热舒适理论,影响热舒适的主要因素有()个。
A.4
B.5
C.6
D.7
参考答案:C
It's very hot in the room. You'd better ____ your coat. [ ]
A. take off
B. put on
C. think about
D. try on
起重机严禁在架空输电线路下面工作,否则应停电作业。当不允许停电时,必须采取可靠的隔离防护措施后,方能进行吊运。()