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【单选题】
用已知浓度的NaOH溶液滴定相同浓度的不同弱酸时,若弱酸的Ka越小,则()
A.
消耗的NaOH越多
B.
滴定突跃越大
C.
滴定突跃越小
D.
指示剂颜色变化越不明显
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【简答题】Passage One In the eyes of many people, city life is attractive with all its advantages and convenience, yet they don’t see (1) . First, with the expansion of the city, housing has become a serious pr...
【单选题】设有以下结构体类型: struct st { char name[8] ; int num ; float s[4] ; } student[50] ; 且结构体数组 student 中的元素都已赋值,若要将这些元素值写到文件 fp 中,以下不正确的形式是 ( )
A.
fwrite( student , sizeof( struct st) , 50 , fp) ;
B.
fwrite( student , 50 * sizeof( struct st) , 1 , fp) ;
C.
fwrite( student , 25 * sizeof( struct st) , 25 , fp) ;
D.
for( i=0 ; i<50 ; i++) fwrite( student , sizeof( struct st) , 1 , fp) ;
【单选题】选择正确的全剖主视图。
A.
(1)
B.
(2)
C.
(3)
【简答题】白居易考中进士这一科一共录取了多少人呢?
【简答题】You have to hurry to school, there’s _______ time left.
【简答题】白居易考中进士这一科一共录取了多少人呢?
【单选题】白居易考中进士这一科一共录取了多少人呢?
A.
100
B.
5
C.
17
D.
300
【单选题】The hotel under this building has ______ for only forty people; it is far from enough of us.
A.
basement
B.
lodging
C.
board
D.
accommodation
【单选题】波浪理论认为一个完整的周期分为。
A.
上升 5 浪,调整 3 浪
B.
上升 5 浪,调整 2 浪
C.
上升 3 浪,调整 3 浪
D.
上升 4 浪,调整 2 浪
【单选题】You have to hurry up if you want to buy something because there’s hardly __ left.
A.
something
B.
anything
C.
nothing
D.
everything
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