导爆索多用于露天深孔爆破和硐室大爆破中,但煤矿井下只能使用普通导爆索。()

题型:判断题

问题:

导爆索多用于露天深孔爆破和硐室大爆破中,但煤矿井下只能使用普通导爆索。()

考点:井巷工程井巷工程题库
题型:判断题
若整数x同时满足3x-7<x与-
3
2
x+1<-3
,则该整数x是(  )
A.1B.2C.3D.4
题型:判断题
阅读理解。
     It is easier to go downhill than to climb uphill, so it is easier to fall into bad habits than into good ones.
     Bad habits don't come suddenly. They come little by little without your knowing their danger. Schoolboys
first pick up little bad habits from schoolmates. If they see bigger boys smoking, they also want to learn to
smoke. If they see their friends gambling (赌博), they want to gamble. When they get older, the habits
become stronger and stronger so that they can no longer get rid of them. From copying, they learn to steal.
From gambling, they learn to cheat. At last, they become distrusted (不信任) by everybody. How necessary
(需要) it is that we get rid of the bad habits in the beginning!
1. It is easier to fall into ______ than into            .
[ ]
A.good habits; bad ones
B.bad habits; good one
C.bad habits; good ones
D.good habits; bad one
2. Bad habits come            .
[ ]
A.suddenly
B.little by little
C.faster and faster
D.easier and easier
3. Where do schoolboys pick up little bad habits first?
[ ]
A.In school
B.On the street
C.From older boys
D.In school and on the street
4. When schoolboys get older, their bad habits become            .
[ ]
A.stronger and stronger
B.weaker and weaker
C.better and better
D.worse and worse
5. It is important for us to            .
[ ]
A.copy others
B.learn to steal and cheat
C.become distrusted by everybody
D.get rid of the bad habits in the beginning
题型:判断题

青少年期心理卫生工作重点在于如何处理或正确对待

A.自我意识的建立和社会化问题

B.认知功能的全面和均衡发展问题

C.友谊与对异性情感的问题

D.考试焦虑和对学校环境适应问题

E.自我否定和人际关系问题

题型:判断题

在一个边长为40米的正方形花坛四周摆花,每隔2米摆一盆花,共摆多少盆?

题型:判断题
下列说法中正确的是(  )

A.相对静止指物体运动的快慢和方向相同

B.匀速直线运动是一种最常见的运动

C.5m/s和5s/m 一样快

D.俗话说“水涨船高”,“水涨”、“船高”都是以水面为参照物的

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