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【单选题】
AgCl的ksp=1.8×10-10,则同温下AgCl的溶解度为()。
A.
1.8×10-10mol/L
B.
1.34×10-5mol/L
C.
0.9×10-5mol/L
D.
1.9×10-3mol/L
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举一反三
【单选题】How long have the people known each other?
A.
a day
B.
a few months
C.
a year
【单选题】听力原文:W: How long have you known Susan? M: I've known her about three years. I met her in the library where we used to read, but now I can only see her on the campus occasionally. Where did Susan often...
A.
In the library.
B.
In the college.
C.
On the campus.
【单选题】How long have you known each other?
A.
A very long time, since I was a kid. prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
B.
It is small but beautiful. prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
C.
No, we don ’ t. prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
D.
No. We live in the same neighborhood . prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
E.
Twice a month. prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
【单选题】______ have you known the city? For five years. [     ]
A.
How long
B.
How often
C.
How many
D.
How much
【判断题】颗粒型催化转换器与整体型催化转换器相比具有体积小、与排气接触面积大、排气阻力小等优点。
A.
正确
B.
错误
【单选题】颗粒型催化转换器与整体型催化转换器相比具有体积小、与排气接触面积大、排气阻力小等优点。( )
A.
B.
【单选题】下列程序语句不正确的是(  )
A.
INPUT“MATH=”;a+b+c
B.
PRINT“MATH=”;a+b+c
C.
a=b+c
D.
a1=b-c
【单选题】下列程序语句不正确的是  (    )
A.
INPUT“MATH=”;a+b+c
B.
PRINT“MATH=”;a+b+c
C.
a=b+c
D.
a=b-c
【判断题】由于水利工程建设项目经济评价采用的数据,大多数来自预测或者估算结果,其效益、费用和计算期等都存在着一定程度的不确定性。
A.
正确
B.
错误
【简答题】When you are in England you must be very careful in the streets __1._____ the traffic drives on the left. Before you cross a street you must look to the right first __2._____ then the left. In the mor...
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