用酸性氢氧燃料电池电解苦卤水(含Cl-.Br-.Na+.Mg2+)的装置如图所示

题型:不定项选择题

问题:

用酸性氢氧燃料电池电解苦卤水 (含Cl-.Br-.Na.Mg2+)的装置如图所示 (a.b为石墨电极)。下列说法中,正确的是

[     ]

A.电池工作时,正极反应式为:O+2 H2O + 4e-=4 OH-

B.电解时,a 电极周围首先放电的是Br-而不是Cl-,说明当其它条件相同时前者的还原性强于后者

C.电解时,电子流动路径是:负极→外电路→阴极→溶液→阳极→正极

D.忽略能量损耗,当电池中消耗0.02g H2 时,b 极周围会产生0.02g H2

考点:燃料电池原电池原理
题型:不定项选择题

任务型阅读。阅读短文,并按要求完成下列试题。

     Maybe you are not interested in math. Maybe you think school life is boring. You probably think you will

never be a top student. In fact, anyone can become a better student if he or she wants to. If you can use your

time well, you may improve your study without much work. Here's how:

     Plan your time carefully. When you plan your week time, you should make a list of things that you have to

do. First write down the time for eating, sleeping, dressing, etc. Then decide on a good time for studying. Of

course, studying shouldn't take all of your time. Don't forget to leave yourself enough time for hobbies.

     Find a good place to study. Look around the house for a good study place. Keep this space, which may be

a desk or just a corner of your room. No games, radio, or television! When you sit down to work, think only

about the subject!

     Make good use of your time in class. Listen carefully to what the teacher says. If you listen carefully in

class, you may do less work later. You also need to take notes in class, because it can make it easier for you to

learn well.

     There are only a few ways mentioned here to help you with your studying. I believe you will find many other

ways besides these.

判断正误、英译汉及回答问题。(1-2为判断(T or F),3为翻译,4-5为简略回答问题)

1. If you want to study well, you should spend all of your time in studying.  ( )

2. You should find a quiet place to study.  ( )

3. Put the underlined (下划线) sentence into Chinese.

    ________________________________________________________

4. Why do you need to take notes in class?

    ________________________________________________________

5. How many ways mentioned here to help you with your studying?

    ________________________________________________________

题型:不定项选择题

对于违反《检察官法》规定的条件任命检察官的,一经发现,应当作出相应的处理,则下列处理方法中错误的是:

A.做出该项任命的机关应当撤销该项任命

B.若是上级人民检察院发现下级人民检察院检察官的任命有上述情况的,应当责令下级人民检察院依法撤销该项任命

C.若是上级人民检察院发现下级人民检察院检察官的任命有上述情况的,要求下级人民检察院依法提请同级人民代表大会常务委员会撤销该项任命

D.若是上级人民检察院发现下级人民检察院检察官的任命有上述情况的,直接撤销该项任命

题型:不定项选择题

(4)根据下面文字资料回答第121~125题:

20世纪70年代,在世界新发现的大油田中,海上油田有31个,约占51.7%,在新增加的地质储量中,海洋占42%,海上钻井平台总数为7021座,其中美国有1079座,委内瑞拉有 5033座,苏联有840座。1977年,近海油田有500个,产量4.6亿吨,占世界总产量的15.6%。

1977年世界石油总产量是()亿吨

A.4.6

B.29.5

C.34.1

D.10.7

题型:不定项选择题

().

A.2

B.1

C.0

D.-1

题型:不定项选择题

使用装载机规定描述正确的是()。

A.起步前,应先鸣声示意,宜将铲斗提升离地1.0m

B.行驶中,应避免突然转向

C.运载物料时,宜保持铲臂下铰点离地面1m左右

D.将铲斗提升到最高位置运输物料

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