下列说法不正确的是 [ ] A. 通电一段时间后,搅拌均匀,溶液的pH增大 B.

题型:选择题

问题:

下列说法不正确的是     [ ]

A. 通电一段时间后,搅拌均匀,溶液的pH增大

B. 甲电极上的电极反应为: 2Cl- - 2e- == Cl2

C. Pt电极上的电极反应为: O2+2H2O+4e==4OH

D. 总反应的离子方程式为: 2Fe3+ +Cu==Cu2+ + 2Fe2+

考点:电解池原理原电池电极反应式的书写原电池原理电解池电极反应式的书写
题型:选择题

关于日光性荨麻疹,下列哪项波长紫外线敏感作用最强()

A.波长200mm左右

B.波长250mm左右

C.波长300mm左右

D.波长350mm左右

E.波长400mm左右

题型:选择题

半导体

题型:选择题


Directions: There are 10 blanks in the following passage. For each numbered blank, there are 4 choices marked A, B, C and D.

The key to the industrialization of space is the U.S. space shuttle. (51) it, astronauts will acquire a workhouse vehicle (52) of flying into space and returning many times. (53) by reusable rockets that can lift a load of 65 000 pounds, the shuttle will carry devices for scientific inquiry, as well as a variety of military hardware. (54) more significantly, it will deliver materials and machines into space for industrial purposes (55) two decades ago when "sputnik" (artificial satellite) was added to the vocabulary. In short, the (56) importance of the shuttle lies in its promise as an economic tool.
What makes the space shuttle (57) is that it takes off like a rocket but lands like an air plane. (58) when it has accomplished its mission, it can be ready for (59) trip in about two weeks.
The space shuttle, the world’s first true spaceship, is a magnificent step (60) making the impossible possible for the benefit and survival of man.

A.new

B.another

C.certain

D.subsequent

题型:选择题

自荐的种类包括()

①现场自荐

②书面自荐

③电话自荐

④广告自荐

⑤网络自荐

⑥委托学校自荐

⑦委托他人自荐

⑧委托中介机构

A.①②③④⑤⑥⑦

B.①③④⑤⑥⑦⑧

C.①②③④⑤⑥⑦⑧

D.②③④⑤⑥⑦⑧

题型:选择题

下列关于投资性房地产的后续计量的表述中,不正确的有()。

A.采用成本模式进行后续计量的不允许再采用公允价值模式计量

B.采用公允价值模式进行后续计量的投资性房地产,应计提折旧或摊销,但无须计提减值准备

C.采用公允价值模式进行后续计量的投资性房地产,资产负债表日公允价值低于其账面余额的差额应计入公允价值变动损益

D.投资性房地产的计量模式一经确定,不得随意变更

E.采用成本模式进行后续计量的投资性房地产,按月计提的折旧或进行的摊销应计入其他业务成本

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