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【单选题】
当结构或构件达到下列情况之一者,认为其达到了承载能力极限状态( )A.
截面的受力性能在荷载作用过程中发生变化，结构转变成机动体
B.
影响正常使用和外观的过大的相对变形
C.
某水池裂缝太大，已经漏水
D.
屋面板变形过大，严重积水
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举一反三
【单选题】---You didn't go to the party yesterday, did you? ---____________. I had to finish my paper.
A.
Yes, I didn't
B.
Yes, I did
C.
No, I didn't
D.
No, I did
【单选题】6位7段数码管动态显示模块如图所示，要求人眼看到所有数码管同时显示各自对应的数字，控制数码管位选信号的动态扫描时钟信号频率约为多少【图片】
A.
1kHz
B.
1Hz
C.
10Hz
D.
100Hz
E.
100kHz
F.
1MHz
【简答题】When 1 was 18 , one morning , my father told me to drive him into a town , about 18 miles away . I had just learned to drive , so 1 with pleasure . First we came to the town . Then I took the car to a...
【单选题】6位7段数码管动态显示模块如图1，要求人眼看到所有数码管同时显示各自对应的数字，控制数码管位选信号的动态扫描时钟信号频率约为多少【图片】
A.
1kHz
B.
1Hz
C.
10Hz
D.
100Hz
E.
100kHz
F.
1MHz
【简答题】I entered St. Thomas’s Hospital as a medical student at the age of 18 and spent five years there. I was an unsatisfactory student, for my heart was not in it. I had always wanted to be a writer, and i...
【单选题】6位7段数码管动态显示模块如图1，要求人眼看到所有数码管同时显示各自对应的数字，控制数码管位选信号的动态扫描时钟信号频率约为多少（）【图片】
A.
1Hz
B.
10Hz
C.
100Hz
D.
1kHz
E.
100kHz
F.
1MHz
【判断题】Traditionally, large shippers build factories and warehouses near rail lines and have a section of track on their property called a freight station where goods are loaded on to or unloaded from rail c...
A.
正确
B.
错误
【简答题】生地黄与玄参的功效应用有何异同？
【简答题】The only real (1) China's pollution problems, scientists claim, is to cut emissions ( 排放 ) from power plants, factories and cars. ( solution) 2.The Chinese government has officially (2) the global gam...
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