氢溶于钢后,即可发生氢脆。
参考答案:错
解析:氢溶于钢后残留在位错等处,当氢达到饱和态后,对位错起钉扎作用,使滑移难以进行,才出现氢脆。
Bob was a gardener and he had no work for a few months. One day he went out to look for a job. While he was walking in the street, he saw a poster at the gate of a big restaurant. It said the restaurant needed to hire(雇佣) a man who could grow flowers and trees well. Bob was so pleased that he went straight to answer it. There Bob was told to go back and get his old working clothes to the office. Bob did so.
The boss looked over his working clothes carefully and then decided to let Bob have the job. Bob asked the boss why his working clothes were so important. The boss answered with a smile, "Oh, young man, your working clothes are all with patches(补丁) on the knees. You know, I have dismissed(解雇) two men these days. They had working clothes with patches on the buttocks(臀部). They were too lazy."
小题1:When the boss saw Bob, he ________.
A.gave him the job at once
B.liked Bob at once
C.asked Bob to go home to get his working clothes
D.liked Bob's clothes小题2:Bob's new job was________.
A.to wash dishes
B.to clean the restaurant
C.to cook dishes
D.to grow flowers and trees小题3:We may learn that the boss was ________.
A.very clever
B.foolish
C.very kind
D.hardworking
根据《中华人民共和国城市房地产管理法》的规定,下列关于该法的基本规定表述中不正确的是( )。
A.房地产开发是指在依法取得国有土地使用权的土地上进行基础设施、房屋建设的行为
B.国家依法实行国有土地有偿、无限期使用制度
C.房地产权利人的合法权益受法律保护,任何单位和个人不得侵犯
D.为了公共利益的需要,国家可以征收国有土地上单位和个人的房屋,征收个人住宅的应当保障被征收入的居住条件