在低碳钢的拉伸试验中,当试件达到()时开始塑性变形,而达到()时试件断裂。
A、屈服点;强度极限
B、弹力极限;强度极限
C、强度极限;屈服点
参考答案:A
根据单词首字母提示和句意完成下列句子。
1. I got up late yesterday because I o_________.
2. He gave me a r________ when he saw me walking alone.
3. She didn't s _________ up at his party.
4. Lucy is so e _________ now that she isn't going to do anything.
5. Mr. Wang a _________ that we we'll have a picnic tomorrow.
6. What words can you use to d _________ surfing?
7. Only Tony didn't f________ from that house while the earthquake took place.
8. His sister is going to m _________ a businessman next week.
9. I phoned him many times but he didn't r________ even once.
10. The truth will be r _________ someday.
关于意见与函,下列说法错误的有()。
A.意见与函都是下行文
B.意见与函都是平行文
C.意见适宜对重要问题提出见解和处理办法
D.函可以作为上下级机关之间行文的文种