常用于节电产品、较老产品效率提高了的机电设备、如风机、水泵等的节电量的计算法叫(

题型:单项选择题

问题:

常用于节电产品、较老产品效率提高了的机电设备、如风机、水泵等的节电量的计算法叫( )。

A.效率计算法

B.损耗计算法

C.单耗计算法

D.节能率计算法

考点:注册电气工程师供配电专业注册电气工程师专业考试(供配电专业)7
题型:单项选择题

在抛一枚均匀硬币的实验中,如果没有硬币,则作为实验替代物的是(  )

A.同一副扑克中的任意两张

B.图钉

C.瓶盖

D.一个小长方体

题型:单项选择题

信息匹配

阅读下列应用文及相关信息,并按照要求匹配信息.

首先请阅读下列几种学习英浯的方法:

A. Practice speaking as often as you can-even speaking to yourself is good practice.Try recording

yourself whenever you can.

B. It helps if you can learn with someone else.If you can persuade a friend or family member to study

with you, it will make you keep working.Agree times to meet and set goals for the week.And test each

other regularly.

C. Practice improvising (即兴的) ways of getting your meaning across, even if you don't know the exact

words or phrases.Think of things you might want to say whenever you have time.An example is the use

of tenses.Use facial expressions, hand movements, anything to get your meaning across.

D. Guesswork is important in learning a new language.When listening to recorded material, you aren't

expected to understand everything the first round.If you play the same piece several times, you will most

probably understand something new each time.Learn to make maximum (最大限度) use of all the clues (提示) you can pick up.

E. A wide vocabulary is the key to successful language learning, but don't try to learn too much

vocabulary at once.

F. If you are the person on the bus, street or restaurant asking how you can improve your English, you

are on the right track.The only way to improve your speaking is by speaking.Don't worry about a bad

accent or forgetting words or not being understood.

以下是学习者在学习英语中所遇到的闲难.请将这些困难与他们所对应的学习方法匹配起来.

1. Jack's vocabulary is very small.He is very anxious to improve his English.Therefore, he wants to

enlarge his vocabulary in a short time and tries his best to memorize new words as many as possible at a

time.

2. Margret's pronunciation is poor.And she doesn't know how to improve her pronunciation.She is very

worried and doesn't know what to do.

3. Alice has difficulty in understanding the meaning of the English text.So she looks up the new words in

the dictionary in order to understand everything.However, she made little progress in English.

4. Although Peter wants to communicate with people on the bus when he is on the way home, he is

afraid of being laughed at because of his poor accent.

5. Lynne can't express herself clearly in English because she sometimes forgets some key words and

doesn't know the tenses exactly.

题型:单项选择题

关于胎盘的功能,下列哪些是正确的()。

A.保护母体功能

B.保护胎儿功能

C.合成功能

D.营养物质供应

E.气体交换

题型:单项选择题

关于双位调节器的特点描述不正确的是()

A.双位调节的作用不是连续的

B.双位调节器有两个特定的输出数值,即0.2kgf/cm2和1.0kgf/cm2

C.双位调节机构只有开和关两个位置

D.调节对象中的物料量和能量总是处于平衡状态

题型:单项选择题

被保险人是指其财产或者人身受保险合同保障,享有保险金请求权的人。投保人不可以为被保险人。 ( )

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