弹性波有各种不同的分类方法,按波源形状及波动在介质中传播的形状,可分为球面波、柱面波

题型:判断题

问题:

弹性波有各种不同的分类方法,按波源形状及波动在介质中传播的形状,可分为球面波、柱面波和平面波。

考点:凿岩爆破工考试凿岩爆破工考试题库
题型:判断题

A butcher watching over his shop was really surprised when he saw a dog coming inside the shop. He went over to the dog and noticed it had a note in its mouth. He took the note and it read “Can I have 12 sausages and a leg of lamb, please. The dog has money in his mouth, as well.”

The butcher looked carefully and was surprised to find that there was really a ten-dollar note there. So he took the money and put the sausages and lamb in a bag, placing it in the dog’s mouth. The butcher was so impressed, and since it was about closing time, he decided to shut up shop and follow the dog.

So off he went. He followed the dog to a bus stop. The dog stopped and started looking at the timetable. The dog checked out the time, and then sat on one of the seats provided. Along came a bus. The dog walked around to the front, looked at the number, and went back to its seat. Another bus came. Again the dog went around to the front, looked at the number and climbed on. The butcher, by now, open-mouthed, followed it onto the bus.

The bus traveled through the town and out into the suburbs. Eventually the dog got up, and moved to the front of the bus. It stood on two back paws and pushed the button to stop the bus. Then it got off with groceries still in its mouth.

Well, the dog and the butcher were walking along the road, and then the dog turned into a house. It walked up the path, and dropped the groceries on the step. Then it walked back down the path, took a big run, and threw itself against the door. Then again, it threw himself against it. There’s no answer at the house. so the dog waited at the door.

The butcher watched as a big guy opened the door, and started shouting at it. The butcher ran up, and stopped the guy. “Why do you shout at the dog? It is really a genius.” The guy responded, “You call this clever? This is the second time this week that this stupid dog’s forgotten its key.”

小题1:Which may be the best title of the passage?

A.A clever dog.

B.A curious butcher.

C.A cruel owner.

D.A second lost key.小题2:Why was the butcher surprised when he saw the dog?

A.Because there was a note in the dog’s mouth.

B.Because a dog was not supposed to come into his shop alone.

C.Because the dog was not afraid of being butchered.

D.Because the dog could read.小题3:The passage implies that _________.

A.dogs are cleverer than man

B.dogs are our best friend

C.the butcher is a cruel person

D.some people are never satisfied with what they have got小题4:The dog threw itself against the door, because _________.

A.it wanted to force the door open

B.it wanted its owner to open the door

C.it wanted to punish itself for forgetting the key

D.it wanted to get the butcher’s help小题5:Which of the following statements is NOT true?

A.The butcher was curious so he followed the dog.

B.The dog didn’t get on the first bus because it was the wrong number.

C.To get off the bus, you should let the driver know by pressing the button.

D.The dog would be driven away by the big guy.

题型:判断题

图中能够正确描述水的各个物理量之间关系的图像是(       )

题型:判断题

在有运输机的巷道搬运材料时,人行道间隙不够或跨越运输机时,你该怎样操作?

题型:判断题

《法兰西第三共和国宪法》规定:“行 * * 由总统和内阁掌握。……内阁部长由总统任命。总统命令须各部部长副署。总统和内阁部长共同向议会负责”下列对该宪法评述不正确的是()

A.与封建君主专制制度、帝制独裁对比,共和体制的确立是历史的进步

B.宪法对法国资本主义的发展起到了促进作用

C.法国几经艰难,最终确立了典型的总统制共和制政体

D.宪法的颁布证明了共和派最终掌握了实权

题型:判断题

具有补血、活血、止痛、润肠功效的药物是()

A.熟地黄

B.白芍

C.当归

D.何首乌

E.阿胶

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