【单选题】【消耗次数：1】
在EDTA配位滴定中，铬黑T指示剂常用于( )
①
测定钙镁总量
②
测定铁铝总量
③
测定镍含量
④
测定铜总量
参考答案：
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相关题目
【多选题】
为使滴定终点颜色变化明显，用吸附指示剂法测定卤化物时需注意的是
①
加入糊精使卤化银呈胶状
②
避光
③
滴定在适当酸度的溶液中进行
④
加入电解质使卤化银呈胶状
⑤
卤化银对指示剂的吸附力应略大于被测离子的吸附力
随机题目
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A: Must I take a train? B: No, you [填空]. You can take a plane.
①
dont
②
must not
③
dont have to
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can not
【单选题】
A: Dont worry. Ill leave the message on his desk. B: [填空].
①
Thats great
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Thats great idea
③
Thank goodness
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Its kind of you
【单选题】
A: May I help you, madam? B: [填空].
①
Thats very kind of you
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You are very nice
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Youd better give me a hand
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Yes, Id like a kilo of apples
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A: I didnt mean to do that. Please forgive me. B: [填空].
①
You are wrong
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You are welcome
③
Thats all right
④
Thats OK
【单选题】
A: How do you do? B: [填空]
①
Fine, thank you.
②
How do you do?
③
Not too bad.
④
Very well.
【单选题】
A: [填空]? B: This is Franco Rossi speaking.
①
Who are you
②
Who are you calling
③
Who is that
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What do you want to say
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A: Where there is a will, there is a way. B: [填空].
①
Thats right
②
Thats all right
③
All right
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Not at all
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A: Your newly bought bike is very fashionable. B: [填空].
①
Its very kind of you to say so
②
Yes, very good
③
No, not good
④
Really
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A: Will you please give the note to him? B: [填空].
①
No，please not
②
Sorry，I dont
③
Certainly，Ill give it to him
④
Yes，please do
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A: Hello, may I talk to the headmaster now? B: [填空].
①
Sorry, he is busy at the moment
②
No, you cant
③
Sorry, you cant
④
I dont know