勘验配电盘有什么作用?

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问题:

勘验配电盘有什么作用?

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American _____ begins _____ September after a long ______ holiday. There are ______ terms in a school ______. The first term is from ______ to January, and _____ is from February to June. ______ American children begin to go to _____ when they are five years old. Most students are seventeen to eighteen years old when they finish high school.
High school students in America take only five __ __ six subjects each term. They usually go to the same class every day, and they have homework for every class. After _____ they do all kinds of interesting things.
After high school, many students go to college(大学). They can go to a small or a large one. They usually have to give _____ money. So, many ____ students work after school _____ money ____ their studies.
小题1:
A.studentB.schoolC.classD.teacher
小题2:
A.ofB.onC.atD.in
小题3:
A.winterB.autumnC.summerD.spring
小题4:
A.twoB.threeC.fourD.five
小题5:
A.dayB.weekC.monthD.year
小题6:
A.JulyB.AugustC.SeptemberD.October
小题7:
A.twoB.a secondC.the secondD.second
小题8:
A.ManyB.MuchC.Lot ofD.A lot
小题9:
A.the schoolB.schoolC.schoolsD.a school
小题10:
A.fromB.toC.andD.or
小题11:
A.classesB.classC.the classD.one class
小题12:
A.manyB.a fewC.a littleD.a lot of
小题13:
A.schoolB.high schoolC.collegeD.middle school
小题14:
A.to getB.to takeC.haveD.give
小题15:
A.toB.forC.in D.on
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水稻晚熟品种一般主茎有()个伸长节间,有效分蘖临界叶龄在()叶抽出期。

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大型基坑开挖和大型采石场开采的主要爆破方法是( )。

A.浅孔爆破法
B.深孔爆破法
C.洞室爆破法
D.光面爆破法

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手制动机的擎轮有裂纹时应()。

A.焊接使用

B.消除裂纹后使用

C.更换

D.不使用

题型:问答题 简答题

硅酸盐保温材料是一种无机硬质保温材料,以()为原料,加入碳酸盐或碳素等发泡剂以及其他辅料加工而成。

A.无机玻璃

B.白玉石

C.无机非金属

D.珍珠盐

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