以下不属于蒸汽双效吸收制冷循环流程的是( )。A.串联流程 B.并联流程 C.串并

题型:单项选择题

问题:

以下不属于蒸汽双效吸收制冷循环流程的是( )。

A.串联流程

B.并联流程

C.串并联流程

D.桥接流程

考点:注册公用设备工程师暖通空调专业知识暖通空调专业知识
题型:单项选择题

单词拼写。

1.These children e       themselves with torches and rope,and then started off.

2.After a month's fight,the soldiers were all e       and they were eager to have a good sleep. 

3.The young man was born in a w       family,but he doesn't think money can buy happiness. 

4.The mother was a       about the children when they didn't come back home from school.

5.There were so many people that the company put on e          buses.

6.The          (作者) of the book had a lot of difficult experiences in his life.

7.Saunder's lawyer made a brief          (陈述) to the press outside the court.

8.The teacher told the students to get ready for a         (听写).

9.As a teacher,it is a must for you to have wide range of knowledge as well as         (耐心).

10.The weather in our country         (不同) from one place to another. 

题型:单项选择题

已知数列{an}是等差数列,且a1=2,a1+a2+a3=12,

(1)求数列{an}的前n项和公式;

(2)令bn=anxn(x∈R),求数列{bn}的前n项和。

题型:单项选择题

急性呼吸窘迫综合征的治疗,下述哪项错误()

A.应针对病因积极治疗

B.应尽量提高吸氧浓度,以纠正呼吸窘迫

C.严格控制补液量

D.尽量予晶体液以维持血量基本正常

E.类固醇激素应早期大量使用

题型:单项选择题

下列各项中,允许使用现金的项目包括( )。

A.支付个人劳务费

B.向个人收购物资的价款

C.出差人员须随身携带的差旅费

D.结算起点以下的零星支出

题型:单项选择题

蒸汽往复泵在运行中气缸内出现劈啪声的可能原因是()。

A、润滑不足

B、汽缸内有冷凝水

C、吸入时水击

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