钢的成分一定时,其金相组织主要决定于钢的热处理,其中( )的影响最大。
A.退火
B.正火
C.淬火
D.淬火加回火
参考答案:D
心悸,咳喘无力,气短,多见于()
A.腰膝酸软,神疲乏力,耳鸣失聪,小便频数而清
B.腰膝酸软而痛,眩晕耳鸣,齿松发脱,五心烦热,潮热盗汗
C.成人早衰,耳鸣耳聋,健忘恍惚,两足痿软,发脱齿摇
D.身体浮肿,腰以下尤甚,按之没指,畏寒肢冷,腰膝酸冷
E.面色白或黧黑,腰膝酸冷,形寒肢冷,下肢为甚,神疲乏力
按每小题后的要求转换下面的句子;每空一词。(每小题1分,满分5分)
小题1:The Greens go shopping once a week. (对划线部分提问)
__________ __________ do the Greens go shopping?
小题2:All of us practise speaking English in and after class every day. (改为否定句)
__________ __________ us practise speaking English in or after class every day.
小题3:My daughter isn’t old enough to go to school. (改为同义句)
My daughter is so __________ that she __________ go to school.
小题4:My English teacher is strict with us. So is my Chinese teacher. (合并为一句)
__________ my English teacher __________ my Chinese teacher is strict with us.
小题5:I hear that Mr Smith has been to our school for five days. (改为同义句)
I hear that it is five days __________ Mr Smith __________ to our school.