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【多选题】
缓冲溶液的缓冲范围是()。
A.
1个pH单位
B.
2个pH单位
C.
pKa ±1
D.
4个pH单位
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参考答案:
举一反三
【单选题】Which of the following is NOT one of the reasons that Chinese people are spending less time in the kitchen now than in the past?
A.
They are much busier than before.
B.
They care less about eating than before.
C.
More fast food and instant meals are available than before.
D.
More modem electric appliances are available than before.
【简答题】How much money (in Euros) is the EU spending on efforts to stop the spread of the coronavirus?
【单选题】LBS中的S是什么意思?
A.
位置
B.
信息
C.
基于
D.
服务
【单选题】What has the institution been criticized for?
A.
Getting governments to stop spending on their poor people.
B.
Getting governments to reduce spending on defence.
C.
Getting governments to reduce spending on education.
D.
Getting governments to reduce spending on health care.
【单选题】_____ your savings so fast, or you'll end up as a beggar. [     ]
A.
Stop to spend
B.
Stop spending
C.
To stop to spend
D.
Stopping spending
【简答题】如果将珠穆朗玛峰移到马里亚纳海沟,峰顶会:()
【判断题】起动机单向离合器的作用是防止发动机动力反传至电动机。
A.
正确
B.
错误
【简答题】完形填空 These amazing'smart'wallets can change shape to stop you spending money.When the festival season draws __ 1 __,it is __ 2 __ to have no idea about how much you are spending.But now an inventor ha...
【简答题】我国的珠穆朗玛峰顶的绝对高程为 ________ 。
【简答题】我国的珠穆朗玛峰顶的绝对高程为 m。
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