下载APP
【多选题】
以下选项中，()属于第二类危险源。
A.
雷管
B.
材料堆放过高
C.
脚手架钢管壁厚不满足规范要求
D.
易发生剧烈化学反应的材料混存
E.
氧气瓶
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】第二篇 Sleep We all know that the normal human daily cycle of activity is of some 7 - 8 hours’ sleep alternating with some 16 - 17 hours’ wakefulness and that, broadly speaking, the sleep n...
A.
people hate the inconvenience of working on night shifts.
B.
your life is disturbed by changing from day to night routines and back.
C.
not all industries work at the same hours.
D.
it is difficult to find a corps of good night workers.
【单选题】在本节中，你将听到15个对话，每段对话后有一个问题。请从A，B，C三个选项中选出答案，并标在试卷的相应位置。每段对话后有15秒钟的停顿，以便回答问题和阅读下一个问题。每段对话读两遍。 下面请听这些对话 What’s the matter with the man
A.
He got a high temperature.
B.
He got a bad headache.
C.
Both A and B．