环境监测方法标准中规定的环境监测中最常见的三种方法不包括( )。 A.分析方法

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问题:

环境监测方法标准中规定的环境监测中最常见的三种方法不包括( )。

A.分析方法
B.检验方法
C.测定方法
D.采样方法

考点:环境影响评价工程师环境影响评价技术导则与标准环境影响评价技术导则与标准
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建筑构造中经常要在几个间层中进行冷底子油漆刷,其作用是( )。

A.防水

B.密合缝隙

C.黏结

D.隔潮

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某300MW发电厂低压厂用变压器系统接线见图。已知条件如下:1250kVA低压厂用变压器:Ud%=6;额定电压比为6.3/0.4kV;额定电流比为114.6/1804A;变压器励磁涌流不大于5倍额定电流;6.3kV母线最大运行方式下系统阻抗Xa=0.444(以100MVA为基准的标幺值);最小运行方式下系统阻抗Xs=0.87(以100MVA为基准的标幺值)。ZK为智能断路器(带延时过流保护,电流速断保护)I=2500A。 400VPC段最大电动机为凝结水泵,其额定功率为90kW,额定电流I=180A;起动电流倍数10倍,1ZK为智能断路器(带延时过流保护,电流速断保护)I=400A。 400VPC段需要自起动的电动机最大起动电流之和为8000A,400VPC段总负荷电流为980A,可靠系数取1.2。 请根据上述条件计算下列各题。(保留两位小数,计算中采用"短路电流实用计算"法,忽略引接线及元件的电阻对短路电流的影响。)

计算400V母线三相短路时流过DL的最大短路电流值应为下列哪项数值?()

A.1.91kA

B.1.75kA

C.1.53kA

D.1.42kA

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在合成氨反应中,增大反应物浓度,反应物的转化率一定提高。

题型:单项选择题

3,65,35,513,99,( )

A.1427
B.1538
C.1642
D.1729

题型:单项选择题

There was a woman in Detroit, who had two sons. She was worried about them, especially the younger one, Ben, because he was not doing well in school. Boys in his class played jokes on him because he seemed so (21) The mother (22) that she would help her sons to do (23) in school by herself. She told them to go to the Detroit Public Library to (24) a book a week and do a book report for her.
One day, in Ben’s class, the teacher held up a rock and asked (25) anyone knew it. Ben put up his hand and the teacher let him (26) . "Why did Ben raise his hand" all of his (27) whispered (耳语) and wondered. "He (28) said anything. What could he possibly want to say" To their surprise, Ben not only (29) the rock, but also said a lot about it. He (30) other rocks in its group and even knew (31) the teacher had found it. The teacher and the other students were (32) Ben had learned this from doing one of his book (33) .
Later Ben became the (34) student of his class. When he finished high school, he went to Yale University and (34) became one of the best doctors in the United States.

Ⅱ. 完形填空

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阅读下面短文,从短文后各题所给的四个选项(A、B、C和D)中选出一个最佳选项。

A.whether

B.what

C.where

D.why

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