隧道洞门位置的选择要遵循哪些原则?

题型:问答题 简答题

问题:

隧道洞门位置的选择要遵循哪些原则?

考点:土木建筑工程城市地下空间工程城市地下空间工程题库
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阅读理解。

     It's a Sunday morning. Lin Tao has no classes today. Ha has breakfast and goes out. He is going to

his grandfather's home. Now he is on his way there. He walks and walks. Then he came to a river. The

river is not wide. There is a board over the river. Lin Tao walks onto the board. Suddenly he falls into

the river. "Help! Help!" Lin Tao is crying. But no one comes. There is no one near the river. He waits in

the water for some time. But nothing happens. He begins to get up. Aha, the water is not very deep. It

only comes to half his legs.

1. Lin Tao goes to his grandfather's home on a ____.   

A. Sunday afternoon      

B. Saturday afternoon.   

C. Sunday morning.

2. The river is ____.

A. very wide but not deep    

B. very deep but not wide    

C. not wide or deep

3. Lin Tao falls into the river when he ____.

A. is walking on the board    

B. comes to the river    

C. walks along the road

4. ____ comes to help him.    

A. A man near the river      

B. No one   

C. His grandfather

5. Lin Tao ____ the river at last.      

A. walks out of    

B. waits in    

C. walks along

题型:问答题 简答题

某农机厂2009年2月发生下列业务:
(1) 购入农机专用零件一批,取得防伪税控增值税专用发票,注明不含税价款100000元;
(2) 向小规模纳税人购入电吹风200个,取得税务机关代开的增值税发票一张,注明价款4000元,增值税240元;
(3) 将100个电吹风奖励给单位工会先进分子,100个作为春节小礼品赠送给采购方的人员;
(4) 接受其他农机厂委托代加工专用农机一台,对方提供材料价值4000元,本厂收取加工费2340元;
(5) 销售农机取得不含税收入120000元。
根据上述资料回答下列问题:

销售农机应缴纳的销项税额为( )元。

A.15600

B.20400

C.12000

D.9800

题型:问答题 简答题

某100mL混合酸中,HNO3物质的量浓度为0.4mol/L,H2SO4物质的量浓度为0.2mol/L。向其中加入2.56克Cu粉,待充分反应后,溶液中Cu2+物质的量浓度为[ ]

A.0.15mol/L 

B.0.3mol/L  

C.0.225mol/L

D.无法计算

题型:问答题 简答题

职能资本包括()

A、工业资本

B、商业资本

C、农业资本

D、借贷资本

题型:问答题 简答题

下图表示动物体生命活动调节的部分过程,图中大写字母代表激素;图乙表示反射弧的结构模式图。请据图回答:

缩手反射时,兴奋从A传到B的信号物质是(),兴奋不能由B传向A的原因是()。

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