处理油泵内衬上的黑点,所用的工具为()。 A.320号砂子; B.0号砂子; C.三

题型:单项选择题

问题:

处理油泵内衬上的黑点,所用的工具为()。

A.320号砂子;

B.0号砂子;

C.三角刮刀;

D.半圆锉。

考点:水轮机调速器机械检修工水轮机调速器机械检修工(中级)水轮机调速器机械检修工(中级)题库
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电动机的温升是在规定其环境温度为()℃时,电动机允许超过环境温度的温度值。

A.40

B.45

C.60

题型:单项选择题

阅读理解。

     Lying in the sun on a rock, the cougar (美洲豹) saw Jeb and his son. Tom before they saw it. Jeb put

his bag down quickly and pulled his jacket open with both hands, making himself look big to the cougar. It

worked. The cougar hesitated, ready to attack Jeb, but ready to forget the whole thing, too.

     Jeb let go of his jacket, grasped Tom and held him across his body, making a cross. Now the cougar's

enemy looked even bigger, and it rose up, ready to move away, but unfortunately Tom got scared and

struggled free of Jeb.

     "Tom, go" shouted his father.

     But Tom broke and ran and that's the last thing you do with a cougar. The second Tom broke free, Jeb

threw himself on the cougar, just as it jumped from the rock. They hit each other in mid-air and both fell.

The cougar was on Jeb in a flash, forgetting about Tom, which was what Jeb wanted.

     Cougars are not as big as most people think and a determined man stands a chance, even with just his

fists. As the cougar's claws (爪子) got into his left shoulder, Jeb swung his fist at its eyes and hit hard. The

animal howled (吼叫) and put its head back. Jeb followed up with his other fist. Then out of the corner of

his eye. Jeb saw Tom. The boy was running back to help his father.

     "Knife, Tom," shouted Jeb.

     The boy ran to his father's bag, while Jeb started shouting as well as hitting, to keep the cougar's attention

away from Tom. Tom got the knife and ran over to Jeb. The cougar was moving its head in and out, trying

to find a way through the wall Jeb was making out of his arms. Tom swung with the knife, into the cougar's

back. It howled horribly and ran off into the mountains.

     The whole fight had taken about thirty seconds.

1. Why did Jeb pull his jacket open when he saw the cougar?

A. To get ready to fight

B. To frighten it away

C. To protect the boy

D. To cool down

2. What do we know about cougars?

A. They are afraid of noises

B. They hesitate before they hit

C. They are bigger than we think

D. They like to attack running people

3. How did Jeb try to hold the cougar's attention?

A. By keeping shouting and hitting

B. By making a wall out of his arms

C. By throwing himself on the cougar

D. By swinging his fists at the cougar's eyes

4. Which of the following happened first?

A. The cougar jumped from the rock

B. Tom struggled free of his father

C. Jeb asked Tom to get the knife

D. Jeb held Tom across his body

题型:单项选择题

(22分)阅读材料,回答问题。

材料一 甲图所示地区是著名的棉花产区,但大面积种植棉花引发了生态环境问题。近年,该地区大量种植一种根深叶茂的草,农业结构发生了一些变化,生态环境也逐渐好转。

材料二 乙图是甲图中M城的气候统计资料。

(1)描述M城的气候特点。(6分)

(2)分析图示棉花种植区的不利自然条件。(4分)

(3)材料一中的“变化”是指什么? “生态环境问题”最有可能是什么?(6分)

(4)分析甲图中沿海地区沼泽的成因。(6分) 

题型:单项选择题

在物资供应进度控制的工作中,监理工程师应负责编制( )。

A.施工单位的物资供应计划
B.采购供应部门的物资供应计划
C.建设单位的物资供应计划
D.现场劳动力、材料和施工机械计划

题型:单项选择题

美国炮制“庚款兴学”的目的是( )。

A.促进中国教育发展
B.培植高等华人 C.中美友好交流 D.花掉这笔钱

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