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【单选题】
若以无水碳酸钠为基准物标定盐酸溶液时,( )应用操作液淋液三次左右。A.
滴定管
B.
容量瓶
C.
锥形瓶
D.
量筒
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【单选题】All the wisdom of the ages, all the stories that have delighted mankind for centuries, are easily and cheaply 【21】______ to all of us 【22】______ the covers of books -- but we must know how to avail ou...
A.
useful
B.
new
C.
readable
D.
available
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【简答题】All the wisdom of the ages,all the stories that delighted mankind for centries, are easily and cheaply available to all of us within the covers of books but we must know how to avail ourselves of this...
【单选题】Many new games are designed on the computers all the time; people of all ages ______ these games
A.
14. Many new games are designed on the computers all the time; people of all ages ______ these games. A．are playing
B.
had played
C.
have been playing
D.
Play
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【单选题】All the wisdom of the ages, all the stories that have delighted mankind for centuries, are easily and cheaply【C1】______to all of us within the covers of books—but we must know how to avail our selves【...
A.
readable
B.
available
C.
useful
D.
new
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