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【单选题】
混凝土的养护时间：抗渗混凝土、强度等级C60及以上的混凝土不应少于( )天，后浇带混凝土不应少于( )天。A.
14、14
B.
7、7
C.
7、14
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举一反三
【单选题】According to the passage,
A.
the distance between people can be fixed.
B.
the distance kept between people is a visible wall.
C.
the distance between people varies from culture to culture.
D.
the distance between people is somewhat fixed.
【单选题】(2分)宇宙飞船相对于地面以速度 作匀速直线飞行,某一时刻飞船头部的宇航员向飞船尾部发出一个光讯号,经过 (飞船上的钟)时间后,被尾部的接收器收到,则由此可知飞船的固有长度为(c表示真空中光速):
A.
；
B.
；
C.
；
D.
。
【简答题】It seems that telephone shortens the distance between people, and people ________________ (彼此可以保持联系) by it.
【单选题】A, B, and C are points on a line. The distance between A and B is twice the distance between A and C. The distance between C and B is 10. Column A Column B The distance between A and B 10
A.
if the quantity in Column A is greater
B.
if the quantity in Column B is greater
C.
if the two quantity are equal
D.
if the relationship cannot be determined from the information given
【简答题】A．The distance that a food product travels to a market. B．The distance between UK and other food producing countries. C．The distance that a food product travels from one market to another. D．The dista...
【单选题】宇宙飞船相对于地面以速度 v 作匀速直线飞行,某一时刻飞船头部的宇航员向飞船尾部发出一个光讯号,经过 t ( 飞船上的钟 ) 时间后,被尾部的接收器收到,则由此可知飞船的固有长度为
A.
c · t
B.
v · t
C.
【单选题】What is the distance between the Earth and the two areas of radiation?
A.
Between 12 and 21 miles
B.
1,000 miles
C.
150 miles
D.
1,500 miles
【单选题】Increase the distance between vessels to 5 cables
A.
The distance between vessels shall be increased to 5 miles
B.
The distance between vessels shall be increased to 0,5 miles
C.
The distance between vessels shall be increased to 5 meters
D.
The distance between vessels shall be increased to 0,5 kilometers
【简答题】要对职业生涯某个阶段是否成功进行全面的评价,必须综合考虑的因素是:A. 个人,家庭; B. 企业评价; C. 社会评价; D. 业和社会评价;
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