用单摆测定重力加速度时,有如下器材供选用,请把应选用的器材填在横线上______

题型:实验题

问题:

用单摆测定重力加速度时,有如下器材供选用,请把应选用的器材填在横线上________.(填字母)

A.1 m长的粗绳

B.1 m长的细线

C.半径为1 cm的小木球

D.半径为1 cm的小铅球E.时钟

F.秒表

G.最小刻度为mm的米尺

H.最小刻度为cm的米尺

I.铁架台 

J.附砝码的天平

考点:单摆的周期
题型:实验题

阅读理解。

     One morning, Mr Smith comes into the garden at the back of his house. He sees much snow in the garden.

He wants to drive (驾驶) his car out, So he asks a man to clean the road from the garage (车库) to the gate

(大门). He says to the man,"Don't throw (扔) any snow on this side. It will damage (毁坏) the flowers in my

garden, and don't throw any on the other side, for it will damage the wall. And don't throw any in to the street,

or the policeman will come." Then he goes out.

     When Mr Smith comes back, the road is clean. There is no snow on the flowers. on the wall or in the

street. But when he opens the garage to get his car out, he sees the garage is full (满的) of snow from the path

and the Car is under the snow.

1. One morning, Mr Smith finds _________ is full of snow.

A. his garage

B. his car

C. his garden

D. his house

2. He wants a man to clean the road because he __________.

A. doesn't like snow

B. often asks the man to do it

C. has no time to clean the road

D. wants to drive his car out of the garage

3. Where does Mr Smith tell the man to throw the snow in the garden?

A. On the wall

B. On the flowers

C. We don't know

D. Into the street

4. When Mr Smith opens the garage, he________.

A. finds it is full of snow

B. takes the snow out

C. finds them is no car there

D. takes his car out

5. Mr Smith's car is _________.

A. in the street

B. under the snow in his garage

C. in front of his house

D. near the road

题型:实验题

冷却塔安装应符合下列规定,( )除外。

A.基础标高应符合设计的规定,允许误差为±10mm

B.冷却塔地脚螺栓与预埋件的连接或固定应牢固,各连接部件应采用热镀锌或不锈钢螺栓

C.同一冷却水系统的多台冷却塔安装时,各台冷却塔的水面高度应一致,高差不应大于30mm

D.单台冷却塔安装水平度和垂直度允许偏差均为1/1000

E.冷却塔风机叶片端部与塔体四周的径向间隙应均匀

题型:实验题

铸胶滚筒铸胶磨损厚度不大于()。

A.40%

B.50%

C.60%

D.80%

题型:实验题

HCNC(华中数控系统)的数控车床基本同时控制轴数为()。

A、3轴;

B、2轴;

C、1轴;

D、4轴;

题型:实验题

任何单位或个人不得干预决定的执行,对处罚结果有异议,可在收到处理决定之日起()日内向上级主管部门书面提请复议。

A、5

B、7

C、10

D、15

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