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【单选题】
下列命题正确的是( )A.
可导函数 是单调减的，则
B.
若 ，则 是 的极值点
C.
若 是 的极值点，则
D.
可导函数的极值点必定是它的驻点
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【简答题】Direction:Fill in the blanks with the words or expressions given below. Change the form where necessary. beam distress grace lower destruction collision explode scatter signal crash The driver gave a ...
【简答题】U4-4. Fill in the blanks with the words given below. Change the form where necessary. beam distress grace lower destruction crash explode scatter signal collision 1. The driver gave a __________that h...
【单选题】回答{TSE}题： The National Park Service America's national parks are like old friends. You may not seethem for years at a time, but just knowing they're out there makes you feelbetter. Hearing the names o...
A.
Because they are always out there.
B.
Because they are very old.
C.
Because they make people feel better.
D.
Because they are very famous.
【单选题】我们经常会见到有些老人弯着腰，无法站直，是由于骨质疏松引起的，特别是绝经后妇女更易引起骨质疏松。大多数人盲目相信补钙产品，吃钙片是不能防治骨质疏松的。 下列哪一项不是防治骨质疏松的药物（）
A.
双膦酸盐
B.
依替膦酸二钠
C.
阿仑膦酸钠
D.
利塞膦酸钠
E.
甲苯磺丁脲
【单选题】The driver gave him a few biscuits.____ was given a few biscuits.
A.
To him
B.
Him
C.
For him
D.
He
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