回弹法检测构件混凝土强度时的一个检测单元称为()。A.测点 B.测区 C.测域 D.

题型:单项选择题

问题:

回弹法检测构件混凝土强度时的一个检测单元称为()。

A.测点

B.测区

C.测域

D.以上均不对

考点:材料科学混凝土混凝土题库
题型:单项选择题

已知△ABC的顶点为A(1,3),B(3,1),C(-1,0).

(I)求AB边所在直线的方程;

(II)求△ABC的面积.

题型:单项选择题

患者女,48岁。因车祸导致腹痛,右小腿畸形入院。体格检查:T36℃,P116次/min,R24次/min,BP70/50mmHg。面色苍白,左中上腹压痛明显,有肌紧张,腹穿有不凝血,右小腿畸形,叩痛明显。

为明确诊断应立即进行的检查项目包括()

A.心电图

B.胸部X线检查

C.血常规

D.腹部B超

E.右胫腓骨X线正侧位片

F.动脉血气分析

题型:单项选择题

毛 * * 总结中国近代历次农民起义运动失败时说过:“没有农民办不成大事,只有农民办不好大事”。下列事件属于“只有农民办不好大事”的是:

A.虎门销烟

B.收复台湾

C.黄海海战

D.义和团运动

题型:单项选择题

When I was in medical college, I went camping with some of my friends. The season was summer; therefore, we chose to go to the seaside. After arriving there, we rent a room and left our luggage there. We finished lunch and then decided to rent a boat because the sea and the weather were beautiful.

We started to row, but about one mile out, the weather suddenly changed. Although the weather was not good, we didn't want to give up, but finally my friends and I agreed that we should go back. We tried to change the boat's direction, but as soon as we changed it, the oarlock (桨架)broke. Therefore, we were unable to turn back. We had to wait for help because we couldn't do anything.

After seeing the change of weather, we shouldn't have continued to row, but it was too late. We regretted(后悔) it. The sea changed a lot, the waves got very high, and the boat began to shake like a cradle(摇篮). One of my friends started to cry; another started to vomit(呕吐). Three hours passed, and nobody came to help us. We were just praying.

Fortunately, after five long hours of waiting, two big boats came to rescue us and we escaped. If they hadn't come to get us, we would have crossed the border between Turkey and Greece because the border was very close.

This story is the most exciting story of my life because we could have died, but luck was with us and we escaped.

小题1:What does the author mainly tell us in this passage?

A.An experience at sea.

B.An exciting experience when swimming.

C.The changeable weather at the seaside.

D.It is dangerous to boat at sea.小题2:When did they begin to go boating in the sea?

A.In the morning.

B.In the afternoon.

C.In the evening.

D.At night.小题3:What they regretted was that ______ when the weather changed.

A.they went camping at the seaside

B.they went on rowing

C.the waves got very high

D.they started too late小题4:One of his friends started to vomit because _________.

A.he came down with a disease

B.they stayed three hours at sea

C.the boat shook too much

D.nobody came to help them

题型:单项选择题

Web站点的TCP端口默认是()。

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