如图所示,一钢筋混凝土水槽底宽1m,水深0.5m,已知单位体积水的重量γ=9.8kN

题型:单项选择题

问题:

如图所示,一钢筋混凝土水槽底宽1m,水深0.5m,已知单位体积水的重量γ=9.8kN/m3,则在1 m长度的水槽上由水引起的约束反力为()。

A.XA=0 YA=4.9kN MA=2.45kN·m

B.XA=-1.225 YA=4.9kN MA=2.45kN·m

C.XA=0 YA=4.9kN MA=2.65kN·m

D.XA=-1.225 YA=4.9kN MA=2.65kN·m

考点:一级注册结构工程师一级结构师基础知识一级注册结构工程师基础部分上午试卷
题型:单项选择题

对心衰相关生物化学指标表述,不正确的是 ()

A.B型利钠肽原可由心室肌和脑细胞产生

B.BNP及NT-proBNP水平对预测及诊断心衰是实验室单个较佳标志物

C.BNP与NT-proBNP的体内清除方式不同

D.BNP对心衰有很高的阴性预测价值

E.只有在心衰时,BNP的浓度才见升高可作为心衰的唯一诊断指标

题型:单项选择题

有冠心病的病人术后48.72h内()。

题型:单项选择题

由病原体引起的并能在生物体之间传播的疾病叫做传染病.下列各组疾病中,属于传染病的是(  )

A.肺结核与乙肝

B.近视眼与色盲

C.坏血病与肿瘤

D.高血压与贫血

题型:单项选择题

阅读理解。

     The Taj Mahal(泰姬陵) is a love story, a sad and beautiful one. If it didn’t exist, we would

easily imagine that the story of its construction was simply a fairy tale. Three hundred years ago,

there lived an Indian emperor called Shah Jahan. His wife was a beautiful and bright woman

whom he loved greatly. Her title was Mumtazl Mahan: its shortened form Taj Mahan, means

“pride of the palace”. In the year 1630 this beloved wife of the emperor died. He was so

broken hearted that he thought of giving up his throne. He decided out of his love for his wife,

to build her the most beautiful tomb that had ever been seen.

     He summoned the best artists and architects from India, Turkey, Persia and  Arabia and

finally, the design was completed. It took more than twenty thousand men working over a

period of 18 years to build the Taj Mahan, one of the most beautiful building in the world.

     The building itself stands on a marble. Platform 29 meters square and 6---7 meters high.

Towers rise from each of the four comers. The Taj itself soars another 61 meters into the air.

It is a eight-sided building made of white marble.

     The emperor planned to build an identical tomb of black marble for himself on the other

side of the river connected by a silver bridge. However his son put him into a prison in the

palace before he could finish, and for the rest of his life, he could only gaze across river at the

tomb of his beloved wife.

1.The whole passage tells us about ______.

A . a beautiful fairy tale          

B. the story of the Taj Mahan  

C. white and black marble tombs made for two emperors

D. the love story of emperor Shah Jahan  and his wife

2. Which of the following statements is NOT true about the Taj Mahan?_____

A. It was completed quickly owing to the efforts of the best artists and workers.

B. A lot of people took part in the building work

C. It is a magnificent building.

D. It is a tomb for the emperor’s beloved wife.

3. The emperor’s own tomb was designed to be _____.

A. 61 meters high          

B. eight-sided

C. black-coloured                 

D. white-colored

4. The emperor ____.

A. died soon after Taj Mahan died    

B. was killed by his son

C. was beloved by his people        

D. died after 1648

5. What’s the meaning of the underlined word in paragraph 2?  _____ 

A. 召唤    

B.请求    

C. 发配    

D. 杀死

题型:单项选择题

计算机系统的接地,下列说法正确的是( )。

A.计算机系统内逻辑地、信号地、屏蔽地均应用绝缘铜绞线或电缆接至总接地铜排,达到一点接地的要求;
B.不同用途、不同设备应分别设置接地装置,经分接装置用绝缘铜绞线或电缆引接至总地铜排;
C.打印机等电噪声较大的外设,可利用三孔插座的接地脚接地;
D.主机和机柜外壳可就近将接地线引接至主接地网的分支接地线上,然后用绝缘铜绞线或电缆引接至总接地铜排,达到“一点接地”的要求。

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