甲说:R-12制冷剂与明火接触会产生有害气体;乙说:制冷剂与明火接触会爆炸。谁正确?

题型:单项选择题

问题:

甲说:R-12制冷剂与明火接触会产生有害气体;乙说:制冷剂与明火接触会爆炸。谁正确?()

A.甲正确;

B.乙正确;

C.两人均正确;

D.两人均不正确。

考点:汽车专业汽车空调系统汽车空调系统题库
题型:单项选择题

单词拼写(每空1分,共10分)

小题1:Every time I returned after an a___________ (缺席,不在), I felt stupid because I was behind the others.

小题2:Her a__________ (雄心,野心) is to become part of the national team for the next game.

小题3:Claire thought it was ridiculous to be offered s____________ (同情心) by a robot.

小题4:Also she felt her home wasn’t e__________ (优雅的,高雅的)enough for someone like Larry who wanted to improve his social position.

小题5:As he was not allowed to a__________ (陪伴,伴奏)her to the shops, he wrote out a list of items for her.

小题6:His attitude s__________(表明)that he haven’t heard of what you have said.

小题7:It was when Asimov was eleven years old that his t____________(天才,特殊能力)for writing became obvious.

小题8:I thought , at the time, that this was just a story but I w______________(目击,当场见到)it with my own eyes many times.

小题9:He tried hard to c__________ (安慰) the crying girl.

小题10: He aimed the arrow at the __________(靶子,目标),but failed.

题型:单项选择题

各种肾炎中肾功能损害最早见于下列哪项检查()

A.酚排泄试验

B.尿比密减低

C.血肌酐升高

D.内生肌酐清除率

E.自由水清除率

题型:单项选择题

对直接关系公共安全、人身健康、生命财产安全的重要设备、设施,行政机关应当督促()建立相应的自查制度。

A、设计单位

B、建造单位

C、安装单位

D、使用单位

题型:单项选择题

出库方式包括()

A、客户自提

B、代办托运

C、配送

D、过户、转仓、取样

题型:单项选择题

当基层较厚需分层施工时,可分别称为( )。

A.高基层

B.低基层

C.中基层

D.下基层

E.上基层

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