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【单选题】
关于“煤烟型烟雾事件”哪一种说法是不正确的（）
A.
是大气污染造成的急性中毒事件
B.
污染源是燃料燃烧及工业废气大量排放
C.
污染事件与特殊的地理条件有关
D.
污染事件与恶劣的气象条件有关
E.
污染物常常是单一的SO 2 污染
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参考答案：
举一反三
【单选题】It costs about _______ times as much to attract a new customer as it costs to keep an old one.
A.
two
B.
three
C.
four
D.
five
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【单选题】渼陂送神的日子为二月初二。送神前 ( )天开始游神,进入祭神高潮
A.
2
B.
4
C.
5
D.
3
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【单选题】下列哪个零件可以不借助工具拆卸( )。
A.
机油尺套管
B.
点火高压线
C.
节气门
D.
机油滤清器
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【单选题】佛尔哈德法返滴定测Iˉ时,指示剂必须在加入过量的AgNO3 溶液后才能加入,这是因为( )
A.
AgI 对指示剂的吸附性强
B.
AgI 对Iˉ的吸附强
C.
Fe 3+ 氧化Iˉ
D.
终点提前出现
查看完整题目与答案
【判断题】It costs about five times as much to get a new customer as it does to keep an existing customer.
A.
正确
B.
错误
查看完整题目与答案
【单选题】It has been observed that a product's production costs decline by some quantity about each time, cumulative output:
A.
increases by twenty five percent.
B.
quadruples.
C.
doubles.
D.
triples
查看完整题目与答案
【简答题】Peter: Hello, I want to order some waterproof cloth. How many types do you have? Salesgirl: We have five different types. Here’s the price list. Peter: I think this type is quite good. But it’s a bit ...
查看完整题目与答案
【单选题】--- Can you deliver the furniture to my place, please? --- It depends on where you live, s ir. --- In Strawberry Town. --- _______ . But it costs five dollars.
A.
Sorry, we can ’ t
B.
Yes, we can deliver there
C.
We know little about the town
D.
We have a lot of goods to deliver
查看完整题目与答案
【单选题】In his example the author tells his readers that ______.
A.
it is important to build up one's physical capacity
B.
it is no good having much physical training
C.
it is more important to know one's capacity than to win the race
D.
it is important to have physical training while one trains his mind
查看完整题目与答案
【简答题】选词填空。 in vain      at random      slow down      talk about      worry about     find out      a generation of at all costs      suffer from      out of breath 1.We must the customs of other countries...
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相关题目：
【单选题】It costs about _______ times as much to attract a new customer as it costs to keep an old one.
A.
two
B.
three
C.
four
D.
five
查看完整题目与答案
【单选题】渼陂送神的日子为二月初二。送神前 ( )天开始游神,进入祭神高潮
A.
2
B.
4
C.
5
D.
3
查看完整题目与答案
【单选题】下列哪个零件可以不借助工具拆卸( )。
A.
机油尺套管
B.
点火高压线
C.
节气门
D.
机油滤清器
查看完整题目与答案
【单选题】佛尔哈德法返滴定测Iˉ时,指示剂必须在加入过量的AgNO3 溶液后才能加入,这是因为( )
A.
AgI 对指示剂的吸附性强
B.
AgI 对Iˉ的吸附强
C.
Fe 3+ 氧化Iˉ
D.
终点提前出现
查看完整题目与答案
【判断题】It costs about five times as much to get a new customer as it does to keep an existing customer.
A.
正确
B.
错误
查看完整题目与答案
【单选题】It has been observed that a product's production costs decline by some quantity about each time, cumulative output:
A.
increases by twenty five percent.
B.
quadruples.
C.
doubles.
D.
triples
查看完整题目与答案
【简答题】Peter: Hello, I want to order some waterproof cloth. How many types do you have? Salesgirl: We have five different types. Here’s the price list. Peter: I think this type is quite good. But it’s a bit ...
查看完整题目与答案
【单选题】--- Can you deliver the furniture to my place, please? --- It depends on where you live, s ir. --- In Strawberry Town. --- _______ . But it costs five dollars.
A.
Sorry, we can ’ t
B.
Yes, we can deliver there
C.
We know little about the town
D.
We have a lot of goods to deliver
查看完整题目与答案
【单选题】In his example the author tells his readers that ______.
A.
it is important to build up one's physical capacity
B.
it is no good having much physical training
C.
it is more important to know one's capacity than to win the race
D.
it is important to have physical training while one trains his mind
查看完整题目与答案
【简答题】选词填空。 in vain      at random      slow down      talk about      worry about     find out      a generation of at all costs      suffer from      out of breath 1.We must the customs of other countries...
查看完整题目与答案
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