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【单选题】
用测观测水平角,测半测,发现水准管气泡偏离2格多,在此情况下应
A.
继续观测下半测回
B.
整平后观测下半测回
C.
继续观测或整平后观测下半测回
D.
整平后全部重测
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参考答案：
举一反三
【单选题】How did Mrs. Kamanga get very high yields of grain?
A.
There was not much insect damage in her stores.
B.
She grew more grain than the other farmers.
C.
She adopted high technology of producing grain.
D.
She used a lot of manure in her field.
查看完整题目与答案
【单选题】What will the library do if a student can't receive a recall notice?
A.
Send an email to him.
B.
Impose an overdue fine on him.
C.
Ask his roommates to give him a message.
D.
Give the notice to his teacher of his department.
查看完整题目与答案
【单选题】How many animals did the police officer find in Mrs. Blunsden's home?
A.
15
B.
20
C.
35
查看完整题目与答案
【单选题】How did Mrs. Kamanga get very high yields of grain?
A.
There was not much insect damage in her stores.
B.
She grew more grain than the other farmers.
C.
She adopted high technology of producing graft,
D.
She used a lot of manure in her field
查看完整题目与答案
【单选题】常温下施工时,水泥砂浆必须在拌成后( )小时内使用完毕
A.
2
B.
3
C.
4
D.
8
查看完整题目与答案
【简答题】依依和萌萌在帮助老师清理化学实验室时，发现一瓶名为草酸的白色固体。仔细查看药品标签，确认其化学式为H 2 C 2 O 4 。为此，依依他们展开了探究活动： 【查阅资料】 ⑴草酸是乙二酸的俗称，是最简单的有机二元酸，结构简式为HOOCCOOH。草酸晶体易溶于水（尤其是沸水）。自然界中的很多植物如菠菜等都富含草酸。 ⑵草酸不稳定，在189.5℃时会分解。 ⑶草酸具有酸的通性，其酸性比醋酸强10000倍...
查看完整题目与答案
【简答题】A teacher can't give _________ attention to each pupil if his class is large.
查看完整题目与答案
【单选题】以下对理想气体模型的描述中,错误的是( )。
A.
构成理想气体系统的分子是具有一定质量的单个质点或多个质点的某种组合。
B.
在理想气体中，被视为质点的气体分子不遵从牛顿运动定律。
C.
当气体被视为理想气体时，气体分子之间和分子与容器器壁分子之间，除以碰撞的形式发生相互作用外，不存在分子力的相互作用。
D.
在理想气体模型下，气体分子之间以及气体分子与容器器壁分子之间的碰撞都是完全弹性碰撞，因而碰撞前、 后不但动量守恒，而且动能也保持不变。
查看完整题目与答案
【单选题】液态氧、液态氮、二氧化碳在一个标准大气压下的沸点是：- 183°C、-196℃和- 78℃，如果在一个标准大气压下用降温的办法来提取这些气体，那么温度降低时，首先被液化分离出来的是 [     ]
A.
氧气
B.
氮气
C.
二氧化碳
D.
三种气体同时液化
查看完整题目与答案
【单选题】How did Mrs. Wilson respond?
A.
She was understanding.
B.
She was apologetic.
C.
She was annoyed.
D.
She was careless.
查看完整题目与答案
相关题目：
【单选题】How did Mrs. Kamanga get very high yields of grain?
A.
There was not much insect damage in her stores.
B.
She grew more grain than the other farmers.
C.
She adopted high technology of producing grain.
D.
She used a lot of manure in her field.
查看完整题目与答案
【单选题】What will the library do if a student can't receive a recall notice?
A.
Send an email to him.
B.
Impose an overdue fine on him.
C.
Ask his roommates to give him a message.
D.
Give the notice to his teacher of his department.
查看完整题目与答案
【单选题】How many animals did the police officer find in Mrs. Blunsden's home?
A.
15
B.
20
C.
35
查看完整题目与答案
【单选题】How did Mrs. Kamanga get very high yields of grain?
A.
There was not much insect damage in her stores.
B.
She grew more grain than the other farmers.
C.
She adopted high technology of producing graft,
D.
She used a lot of manure in her field
查看完整题目与答案
【单选题】常温下施工时,水泥砂浆必须在拌成后( )小时内使用完毕
A.
2
B.
3
C.
4
D.
8
查看完整题目与答案
【简答题】依依和萌萌在帮助老师清理化学实验室时，发现一瓶名为草酸的白色固体。仔细查看药品标签，确认其化学式为H 2 C 2 O 4 。为此，依依他们展开了探究活动： 【查阅资料】 ⑴草酸是乙二酸的俗称，是最简单的有机二元酸，结构简式为HOOCCOOH。草酸晶体易溶于水（尤其是沸水）。自然界中的很多植物如菠菜等都富含草酸。 ⑵草酸不稳定，在189.5℃时会分解。 ⑶草酸具有酸的通性，其酸性比醋酸强10000倍...
查看完整题目与答案
【简答题】A teacher can't give _________ attention to each pupil if his class is large.
查看完整题目与答案
【单选题】以下对理想气体模型的描述中,错误的是( )。
A.
构成理想气体系统的分子是具有一定质量的单个质点或多个质点的某种组合。
B.
在理想气体中，被视为质点的气体分子不遵从牛顿运动定律。
C.
当气体被视为理想气体时，气体分子之间和分子与容器器壁分子之间，除以碰撞的形式发生相互作用外，不存在分子力的相互作用。
D.
在理想气体模型下，气体分子之间以及气体分子与容器器壁分子之间的碰撞都是完全弹性碰撞，因而碰撞前、 后不但动量守恒，而且动能也保持不变。
查看完整题目与答案
【单选题】液态氧、液态氮、二氧化碳在一个标准大气压下的沸点是：- 183°C、-196℃和- 78℃，如果在一个标准大气压下用降温的办法来提取这些气体，那么温度降低时，首先被液化分离出来的是 [     ]
A.
氧气
B.
氮气
C.
二氧化碳
D.
三种气体同时液化
查看完整题目与答案
【单选题】How did Mrs. Wilson respond?
A.
She was understanding.
B.
She was apologetic.
C.
She was annoyed.
D.
She was careless.
查看完整题目与答案
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