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【单选题】
正截面承载力计算的基本假定之一为平截面假定,其主要作用是A.
确定等效矩形应力图形高度 x
B.
确定受压边混凝土应变达 ε cu 时，受压区合力点的位置
C.
确定界限破坏时相对受压区高度 ζ b
D.
由 ε c = ε cu ，确定 ε s 值
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【单选题】You can give thanks ________. A. at the beginning or the end of the email B. in the middle of the email C. in the subject header
A.
at the beginning or the end of the email
B.
in the middle of the email
【单选题】手车式高压开关柜,当手车在试验与工作位置之间移动时,断路器操作机构处于脱扣状态,保证断路器处于( )状态,接地开关不能闭合。(1分)
A.
为防止检修作业车作业平台侵入未封锁线路的限界,作业平台严禁向( )的线路侧旋转。(1分)
B.
未封锁
C.
没有要求
【单选题】In Britain in the middle of the eighteenth century, requisite conditions were in evidence for making that nation the first great industrial country, 'the workshop of the world'. Already enjoying a vig...
A.
its population boom at that time
B.
the development of its fuel supply
C.
the development of Britain's wool and cotton weaving industries
D.
the Industrial Revolution of Britain
【单选题】The pounding rain began in the middle of the night. The people of Jackson, Ohio awoke to the sound then went back to sleep. The next day the rain continued, and the water began to rise. Statistics sai...
A.
evacuating people to higher ground.
B.
sweeping different kinds of animals away.
C.
carrying cars and trucks miles away.
D.
immersing buildings in the low-lying areas in water.
【单选题】In the middle of the day: the men usually stopped running. 查看材料
A.
Right
B.
Wrong
C.
mentioned
【单选题】-- ______ should I take the medicine? -- Three times a day.
A.
How many pills
B.
How much
C.
How often
D.
How many
【单选题】—_____ do you have at home? —I have only one. [ ]
A.
How much laptop
B.
How many laptop
C.
How many laptops
D.
How often laptops
【简答题】完形填空。 The of football began in England in the middle of the nineth century. But the Chinese played a 1 football more than 2,000 years ago. In the 2 , it was not easy and erous. There...
【简答题】How many 2M ( E1 ) in a STM-1 frame?
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