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【单选题】
The fire extinguishing action of CO2 comes mostly from ____.
A.
isolating the heat from the fuel
B.
smothering
C.
cooling
D.
breaking the fire chemical chain reaction
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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
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】佛尔哈德法返滴定测I一时,指示剂必须在加入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I一的吸附性强
C.
Fe3十能将I一氧化成I2
D.
终点提前出现
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
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】佛尔哈德法返滴定测I一时,指示剂必须在加入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I一的吸附性强
C.
Fe3十能将I一氧化成I2
D.
终点提前出现
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
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