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【判断题】
共沉淀是由于沉淀速度的差异,在已形成的沉淀上形成第二种不溶物质,这种情况大多发生在特定组分形成的过饱和溶液中。
A.
正确
B.
错误
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参考答案：
举一反三
【单选题】在原核生物转录过程中,ρ因子的作用是
A.
终止转录
B.
参与转录全过程
C.
识别转录起始位点
D.
组成 RNA 聚合酶全酶
E.
决定基因转录的特异性
查看完整题目与答案
【单选题】Lottery winners may not be happy______.
A.
if they quit their job
B.
if they move to a splendid house
C.
if they spend a lot of money
D.
if they are away from others
查看完整题目与答案
【单选题】如果在现有价格水平，供给量超过需求量（）
A.
该种商品的价格趋于上升
B.
该种商品的价格趋于下降
C.
需求量增加，供给量不变
D.
供给量增加，需求量不变
查看完整题目与答案
【单选题】— Do you know if they _____ to play football with us tomorrow? — I think they will come if they _____ free. [      ]
A.
will come; will be
B.
will come; are
C.
come; are
D.
come; will be
查看完整题目与答案
【单选题】喷洗涤液()刮水器刮水。
A.
先于
B.
同时
C.
慢于
D.
异步
查看完整题目与答案
【简答题】A．If they don't involve any risks. B．If they produce predictable side effects. C．When the urgent need for them arises. D．When tests show that they are relatively safe.
查看完整题目与答案
【单选题】如果在现有价格水平，供给量超过需求量（ ）
A.
该种商品价格趋于下降
B.
该种商品价格趋于上升
C.
需求量增加，供给量不变
D.
供给量增加。需求量不便
查看完整题目与答案
【简答题】A.If they are not satisfied with the educational system. B.If they have an approved systematic educational plan. C.If they are willing to take teachers as their jobs. D.If their children are unable to...
查看完整题目与答案
【单选题】如果在现有价格水平,供给量超过需求量( )
A.
该种商品价格趋于下降
B.
需求量增加,供给量不变
C.
供给量增加。需求量不便
D.
该种商品价格趋于上升
查看完整题目与答案
【单选题】Passengers can begin to earn Miles ______.
A.
if they reserve tickets at a hotel
B.
if they buy tickets at the airport
C.
before receiving the Permanent Card
D.
after receiving the Permanent Card
查看完整题目与答案
相关题目：
【单选题】在原核生物转录过程中,ρ因子的作用是
A.
终止转录
B.
参与转录全过程
C.
识别转录起始位点
D.
组成 RNA 聚合酶全酶
E.
决定基因转录的特异性
查看完整题目与答案
【单选题】Lottery winners may not be happy______.
A.
if they quit their job
B.
if they move to a splendid house
C.
if they spend a lot of money
D.
if they are away from others
查看完整题目与答案
【单选题】如果在现有价格水平，供给量超过需求量（）
A.
该种商品的价格趋于上升
B.
该种商品的价格趋于下降
C.
需求量增加，供给量不变
D.
供给量增加，需求量不变
查看完整题目与答案
【单选题】— Do you know if they _____ to play football with us tomorrow? — I think they will come if they _____ free. [      ]
A.
will come; will be
B.
will come; are
C.
come; are
D.
come; will be
查看完整题目与答案
【单选题】喷洗涤液()刮水器刮水。
A.
先于
B.
同时
C.
慢于
D.
异步
查看完整题目与答案
【简答题】A．If they don't involve any risks. B．If they produce predictable side effects. C．When the urgent need for them arises. D．When tests show that they are relatively safe.
查看完整题目与答案
【单选题】如果在现有价格水平，供给量超过需求量（ ）
A.
该种商品价格趋于下降
B.
该种商品价格趋于上升
C.
需求量增加，供给量不变
D.
供给量增加。需求量不便
查看完整题目与答案
【简答题】A.If they are not satisfied with the educational system. B.If they have an approved systematic educational plan. C.If they are willing to take teachers as their jobs. D.If their children are unable to...
查看完整题目与答案
【单选题】如果在现有价格水平,供给量超过需求量( )
A.
该种商品价格趋于下降
B.
需求量增加,供给量不变
C.
供给量增加。需求量不便
D.
该种商品价格趋于上升
查看完整题目与答案
【单选题】Passengers can begin to earn Miles ______.
A.
if they reserve tickets at a hotel
B.
if they buy tickets at the airport
C.
before receiving the Permanent Card
D.
after receiving the Permanent Card
查看完整题目与答案
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