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【单选题】
设f(x)=(x-3)(x-6)(x-9)(x-12)，则方程f'(x)=0有( )个实根。A.
1
B.
2
C.
3
D.
4
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反馈参考答案：
举一反三
【单选题】When your mind was transferred from your brain to a machine, you would your train of thought.
A.
Y
B.
N
C.
NG
【简答题】处于前运算阶段的儿童具有（ ）的特征。
【简答题】集成运放的反相输入端为虚地时，同相端所接的电阻起什么作用？
【单选题】下列有关注射剂容器的叙述中，错误的是
A.
琥珀色安瓿可滤除紫外线，适用于对光敏感的药物
B.
含钡玻璃的耐碱性能好，可用于磺胺嘧啶钠注射液
C.
含锆玻耐酸、耐碱性能均好
D.
塑料瓶的透明性较差，强烈振荡可产生乳光
E.
湿气和空气不易透过塑料输液瓶，有利于保证贮存期药液的质量
【简答题】阅读理解。 The brain is the boss of the body. Your eyes, ears, nose, and skin tell your brain what is going on around you. Other parts of your body tell your brain what is going on inside of you. Your brai...
【简答题】The article is a(n)______about ”This Is Your Brain on Music”.
【单选题】Brain, like muscles, also needs some kind of exercise and nutrition. The more you use your brain in the right direction, the more you ________ enhance your ability.
A.
could
B.
might
C.
shall
D.
will
【简答题】什么事干槽症,其防治方法如何?
【单选题】A robot brain surgeon anesthetized your brain when he opens your braincase and peers inside.
A.
Y
B.
N
C.
NG
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