在企业中,( )可以是一次事故、一种环境、一种状态的载体,也可以是可能产生不期望后果的人或物。
A.危险 B.危险源C.危险因素 D.重大危险源
参考答案:B
根据括号内的提示或首字母填词。
1. When he came to the _________ (拐角) of the street, he turned left .
2. Do you think __________ (大象) are the largest animals on land?
3. My brother is too young to look after _________ (他自己).
4. My friend Lily likes _________ (收集) football stickers very much.
5. The boy was _________ (惊讶的) to get the first place in the exam.
6. Wednesday is the f________ day of the week .
7. A train is going t_________ a tunnel.
8. Amy can listen to the teachers c________ in class.
9. They found the _________ (lose) child yesterday.
10. Jenny is a good girl because she is always very _________ (help) to others.
民用建筑的构成主要是由地基和基础、墙或柱、楼板层与地面、楼梯、屋顶和门窗等组成。