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【多选题】
针对一混凝土抗弯承载力试验，试件为10多年前加工的旧梁，试验后发现设计值和试验值存在较大偏差。排除人工操作和机器原因，还可能与下列哪些原因有关？
A.
钢筋、混凝土等材料强度的离散性导致
B.
养护时间不够引起
C.
未考虑混凝土碳化因素
D.
未考虑氯离子渗透、钢筋锈蚀等因素
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参考答案：
举一反三
【简答题】听写,请根据给出的汉语意思,拼写出下列单词(听写请不要查阅词典) 1.主任2.包装3.实践。4.车间5.把......分成6.参加7.生产线8.例如。9.社会的。10.给......封口;11.技能。12.玩具。13.塑料的。14.包;包裹。15.组织。16.合作17.进步;改善
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【简答题】You see that young man swimming out at sea? He's trying to swim out to the beacon and back. He must be __________ (1) to have committed himself to such a thing. The __________ (2) is far too strong. T...
查看完整题目与答案
【简答题】Joy: Yes, I see. He is not available just now. Don: Could you (3)__________? Joy: He's very busy for the next few days. Don: Would you mind asking him to call me back? Joy: Sorry. I don't think I coul...
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【单选题】He may be( )and he's all alone.
A.
dying
B.
dead
查看完整题目与答案
【简答题】请根据所学知识,完成植物类群检索表: I .能开花结果,用 1 繁殖 .......................................... 种子植物 II .种子裸露着,其外层没有果皮包被 .............................. 2 植物 II .种子外层有果皮包被 ..................................................
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【简答题】To say someone was “sweet” used to be quite common in Britain. We didn’t just use the word to describe our mothers and grandmothers, but a wide range of people including public figures. But not anymor...
查看完整题目与答案
【单选题】第二信使不包括：
A.
Ip3
B.
5′-cAMP
C.
cGMP
D.
Ca2+
E.
cAMP
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【单选题】Suddenly, a tall man driving a golden carriage _______ the girl and took her away, _______ into the woods.
A.
seizing; disappeared
B.
seized; disappeared
C.
seizing; disappearing
D.
seized; disappearing
查看完整题目与答案
【简答题】将你所听到的单词填在横线上。 Tom is an 1 of the city government Chicago. He is one of the 2 there. Fire is a 3 problem in the big city. Nobody in the fire department can forget that a large part of chicago burned ...
查看完整题目与答案
【单选题】You don't have to be a scientist to solve big environmental problems. One Dutch designer is finding creative ways to make a change-and he's inviting bikers to join him. Daan Roosgaarde, 38, is a desig...
A.
air pollution is not a big problem in China
B.
creative ideas may help improve city life
C.
only scientists can solve big environmental problems
D.
the survey of 338 cities nationwide was not necessary
查看完整题目与答案
相关题目：
【简答题】听写,请根据给出的汉语意思,拼写出下列单词(听写请不要查阅词典) 1.主任2.包装3.实践。4.车间5.把......分成6.参加7.生产线8.例如。9.社会的。10.给......封口;11.技能。12.玩具。13.塑料的。14.包;包裹。15.组织。16.合作17.进步;改善
查看完整题目与答案
【简答题】You see that young man swimming out at sea? He's trying to swim out to the beacon and back. He must be __________ (1) to have committed himself to such a thing. The __________ (2) is far too strong. T...
查看完整题目与答案
【简答题】Joy: Yes, I see. He is not available just now. Don: Could you (3)__________? Joy: He's very busy for the next few days. Don: Would you mind asking him to call me back? Joy: Sorry. I don't think I coul...
查看完整题目与答案
【单选题】He may be( )and he's all alone.
A.
dying
B.
dead
查看完整题目与答案
【简答题】请根据所学知识,完成植物类群检索表: I .能开花结果,用 1 繁殖 .......................................... 种子植物 II .种子裸露着,其外层没有果皮包被 .............................. 2 植物 II .种子外层有果皮包被 ..................................................
查看完整题目与答案
【简答题】To say someone was “sweet” used to be quite common in Britain. We didn’t just use the word to describe our mothers and grandmothers, but a wide range of people including public figures. But not anymor...
查看完整题目与答案
【单选题】第二信使不包括：
A.
Ip3
B.
5′-cAMP
C.
cGMP
D.
Ca2+
E.
cAMP
查看完整题目与答案
【单选题】Suddenly, a tall man driving a golden carriage _______ the girl and took her away, _______ into the woods.
A.
seizing; disappeared
B.
seized; disappeared
C.
seizing; disappearing
D.
seized; disappearing
查看完整题目与答案
【简答题】将你所听到的单词填在横线上。 Tom is an 1 of the city government Chicago. He is one of the 2 there. Fire is a 3 problem in the big city. Nobody in the fire department can forget that a large part of chicago burned ...
查看完整题目与答案
【单选题】You don't have to be a scientist to solve big environmental problems. One Dutch designer is finding creative ways to make a change-and he's inviting bikers to join him. Daan Roosgaarde, 38, is a desig...
A.
air pollution is not a big problem in China
B.
creative ideas may help improve city life
C.
only scientists can solve big environmental problems
D.
the survey of 338 cities nationwide was not necessary
查看完整题目与答案
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