题目内容

阴极常发生的两种腐蚀类型为:

A. 析氢腐蚀
B. 耗氧腐蚀
C. 孔蚀
D. 电偶服饰

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金属电化学腐蚀阳极发生的是氧化反应。

A. 对
B. 错

金属的电化学腐蚀包括阴极反应和阳极反应两个过程。

A. 对
B. 错

由于腐蚀介质中去极化剂的存在,使得单-金属不能够与腐蚀介质构成腐蚀电池。

A. 对
B. 错

Listen to the passage Why Do We Study English and tick the reasons for studying English mentioned by the speaker.[音频]

A. It is one of the most widely used languages in the world.
B. It is the language spoken by the largest population.
C. It is the only official language of the U.S.
D. It is one of the working languages at international meetings.
E. 80% of commercial emails are written in English.
F. It is the only official language used in the U.N.
G. Millions of books and magazines are written in English.
H. It is really a bridge to knowledge.
It enables us to visit foreign websites.
J. It helps us learn modern science.

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