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【简答题】
某含有 Ag + 、 Ni 2+ 、 Cd 2+ 离子(活度均为 1 )的pH=2.0 的水溶液,电解时, H 2 与各金属在阴极析出的先后顺序为 。 已知 E Ɵ (Ag + |Ag)=0.7991V, E Ɵ (Ni 2+ |Ni)= - 0.230V, E Ɵ (Cd 2+ |Cd)= - 0.402V 。H2 的超电势在 Ag 上为η=0.200V ,在 Ni 上 η=0.240V ,在 Cd 上 η=0.300V 。 A. Ag ,Ni ,Cd , H 2 B. Ag , H 2 , Ni ,Cd C. Ag , Ni , H 2 , Cd D. Cd , H 2 , Ni , Ag
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举一反三
【判断题】I have read the book, and I have seen the film as well. can be changed into the sentence: Not only I have read the book, but I have also seen the film.
A.
正确
B.
错误
【单选题】The film I saw yesterday is the best one ______ I've ever seen.
A.
which
B.
that
C.
what
D.
of which
【单选题】When I got to the cinema ， the film for the minutes ．
A.
． has begun
B.
． had begun
C.
． had been on
D.
． was on
【判断题】I have read the book, and I have seen the film as well. can be changed into the sentence: Not only have I read the book, but I have also seen the film.
A.
正确
B.
错误
【单选题】病人,女性,60岁。2周前因高血压性脑出血导致肢体瘫痪。病人神志清楚,说话口齿不清,大小便失禁。护士协助病人翻身后,在身体空隙处垫软枕,其作用是
A.
促进局部血液循环
B.
降低局部组织所承受的压力
C.
降低空隙处所受压强
D.
减少皮肤的摩擦刺激
E.
防止排泄物对局部的直接刺激
【判断题】I have read the book, and I have seen the film as well. can be changed into the sentence: Not only have I read the book, but I have seen the film.
A.
正确
B.
错误
【判断题】I have read the book, and I have seen the film as well. can be changed into the sentence: I have not only read the book, but I have also seen the film.
A.
正确
B.
错误
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