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【单选题】
用氢氧化钠标准溶液滴定邻苯二甲酸 ( K a1 =1.3 ́ 10 -3 , K a2 =2.9 ́ 10 -6 ) 时,会出现几个 pH 突跃?A.
无突跃
B.
无法确定
C.
1 个
D.
2个
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反馈参考答案：
举一反三
【简答题】When he realized the police had spotted him, ?When he realized the police had spotted him, the man ______ the exit as quickly as possible. A) made off B) made for C) made out ...
【单选题】以下说法正确的是
A.
常见的块元素有p、div、span、ul
B.
块元素能够容纳其他的块元素和内联元素，但p标记不能容纳块元素，所有p标记不是块元素
C.
块元素总是在新行上开始（独占一行）
D.
块元素不能进行行高的设置
【单选题】The police______ him for questioning when they found him sneaking away from the store.
A.
accused
B.
tortured
C.
detained
D.
prosecuted
【简答题】在动物中脑的上下丘之间横断脑干,可出现_____。
【单选题】—Has the boy got his bicycle now? —Yes, the police gave .
A.
him to him
B.
it to it
C.
it to him
D.
him to it
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