下列化学试剂中,()不属于消毒剂。A、Cl2 B、臭氧 C、二氧化氯 D、三氯甲烷

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问题:

下列化学试剂中,()不属于消毒剂。

A、Cl2

B、臭氧

C、二氧化氯

D、三氯甲烷

考点:中级水质检验工中级水质检验工题库
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玉米育苗移栽增产的原因。

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根据对话内容,将方框内符合对话情景的句子抄写在空白处,使对话恢复完整,其中两项是多余的。
A: Hello , 小题1:________________________________
B: Sorry, She is out.
A: When will she come back?
B: 小题2:.____________________________________________
A: When she comes back, Could you ask her to call me as soon as possible? I want to ask her about Terra Cotta Warriors.
B: Sure. 小题3:.__________________________________________
A: My telephone number is 45781265.
B: 小题4:. __________________________________________________
A: My name is Lily.
B: Okay, I will tell her to call you when she comes back.
A: 小题5:. ______________________________________. Good bye.
B: Good bye.
A. At about ten.
B. This is Lucy speaking.
C. What's your telephone number?
D. Thank you.
E. Is Lucy at home. Bob?
F: Not at all.
G. And your name,  please.
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投资者买入一份看跌期权,若期权费为C,执行价格为X,则当标的资产价格为( )时,该投资者不赔不赚。

A.X+C

B.X-C

C.C-X

D.C

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行为疗法的理论基础是

A.巴甫洛夫的经典条件反射

B.斯金纳的操作条件反射

C.巴甫洛夫的经典条件反射,斯金纳的操作条件反射及社会学习理论

D.社会学习理论

E.学习理论

题型:单项选择题

甲地降水相对变率较乙地同时期的相对变率大,说明甲地降水量比乙地多。()

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