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【单选题】
无粘结预应力筋在过程中，滑脱或断裂的数量不应超过结构同一截面无粘结预应力筋总量的（ ）。
A.
5％
B.
4％
C.
3％
D.
2％
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参考答案：
举一反三
【简答题】 a film takes a long time and is a very hard work. Writing the story for the film may take many weeks. Filming the story being acted or shooting the film, as it is called, often takes at least s...
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【单选题】-______does it take you to get to the zoo? -.It takes me ________hour.
A.
How often; a
B.
How far; an
C.
How long; an
D.
How far; a
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【判断题】四．根据短文内容，判断正（T）误（F）。My name is Sally White . I am a school girl . My school is far from my home . Every day it takes long time to get there . The road is not flat . So I cannot go to school by bike . ...
A.
正确
B.
错误
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【单选题】The scenes have to be filmed many times because ______.
A.
it takes a long time to make a film
B.
it is often difficult to make them just right
C.
many people work together
D.
the film is poor
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【简答题】实验室连续性试验的目的:
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【单选题】The reason relationships often break up after four years is that it takes that long to raise a child through infancy. (lines 109–112)(Please decide whether the statement above is a Fact or a Theory)
A.
Fact
B.
Theory
C.
X
D.
X
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【简答题】几位同学用实验室提供的下列装置制取氧气并进行氧气的性质实验： （1）写出装置中标号仪器的名称：①______②______ （2）若用高锰酸钾制取氧气，选择的气体发生装置是______；收集装置是______；反应的化学方程式为______．属于______反应． （3）若用过氧化氢溶液制取氧气，选择的体发生装置是______；反应的化学方程式为______其中二氧化锰起______作用． （4）...
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【简答题】实验室按下图所示装置制取CO 2 ，并检验CO 2 的性质．试回答以下问题： （1）实验开始前，先应检查装置A的______________。 （2）用装置A来制取CO 2 ，所用的药品是____________和____________（写化学式） （3）若要用装置B鉴定CO 2 ，在B中应盛放的试剂名称是____________，当将标①和②的导管口连接时，B中看到的实验现象是________...
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【单选题】如图为实验室加热高锰酸钾制取氧气的装置。在实验过程中，当观察到气泡在导气管口连续、均匀地冒出时，才开始收集气体，其目的是
A.
为了检验该实验装置的气密性
B.
防止水槽中的水倒吸使试管破裂
C.
为了提高收集到的氧气的纯度
D.
防止高锰酸钾颗粒进入导气管
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【单选题】The reason why therapy often takes so long is that __________.
A.
it is not as effective as the therapists expected
B.
it is really difficult for people to transform themselves
C.
once people get back to their old environment, they tend to act in their old ways
D.
people cannot avoid being influenced by others even during the therapy
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【简答题】 a film takes a long time and is a very hard work. Writing the story for the film may take many weeks. Filming the story being acted or shooting the film, as it is called, often takes at least s...
查看完整题目与答案
【单选题】-______does it take you to get to the zoo? -.It takes me ________hour.
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【判断题】四．根据短文内容，判断正（T）误（F）。My name is Sally White . I am a school girl . My school is far from my home . Every day it takes long time to get there . The road is not flat . So I cannot go to school by bike . ...
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【单选题】The scenes have to be filmed many times because ______.
A.
it takes a long time to make a film
B.
it is often difficult to make them just right
C.
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D.
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【简答题】实验室连续性试验的目的:
查看完整题目与答案
【单选题】The reason relationships often break up after four years is that it takes that long to raise a child through infancy. (lines 109–112)(Please decide whether the statement above is a Fact or a Theory)
A.
Fact
B.
Theory
C.
X
D.
X
查看完整题目与答案
【简答题】几位同学用实验室提供的下列装置制取氧气并进行氧气的性质实验： （1）写出装置中标号仪器的名称：①______②______ （2）若用高锰酸钾制取氧气，选择的气体发生装置是______；收集装置是______；反应的化学方程式为______．属于______反应． （3）若用过氧化氢溶液制取氧气，选择的体发生装置是______；反应的化学方程式为______其中二氧化锰起______作用． （4）...
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【简答题】实验室按下图所示装置制取CO 2 ，并检验CO 2 的性质．试回答以下问题： （1）实验开始前，先应检查装置A的______________。 （2）用装置A来制取CO 2 ，所用的药品是____________和____________（写化学式） （3）若要用装置B鉴定CO 2 ，在B中应盛放的试剂名称是____________，当将标①和②的导管口连接时，B中看到的实验现象是________...
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【单选题】如图为实验室加热高锰酸钾制取氧气的装置。在实验过程中，当观察到气泡在导气管口连续、均匀地冒出时，才开始收集气体，其目的是
A.
为了检验该实验装置的气密性
B.
防止水槽中的水倒吸使试管破裂
C.
为了提高收集到的氧气的纯度
D.
防止高锰酸钾颗粒进入导气管
查看完整题目与答案
【单选题】The reason why therapy often takes so long is that __________.
A.
it is not as effective as the therapists expected
B.
it is really difficult for people to transform themselves
C.
once people get back to their old environment, they tend to act in their old ways
D.
people cannot avoid being influenced by others even during the therapy
查看完整题目与答案
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