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【简答题】
发动机一般由 、 、 、 、 、 和 组成。
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】关于网络外部性的描述应当被解释为:
A.
对某一商品的需求是随着价格的降低而增加的
B.
一个商品的价值随其预期将售数量的增加而增加
C.
边际效用递减
D.
价低买者众、价高买者寡
【简答题】汽油是由( )原子和( )原子组成的烃类化合物，其不溶于水是因为烃类化合物为( )性分子。
【单选题】关于网络外部性的描述应当被解释为
A.
对某一商品的需求是随着价格的降低而增加
B.
一个商品的价值随其预期将售数量的增加而增加
C.
边际效用递减
D.
价低买者众、价高买者寡
【单选题】We shall fight on the seas and oceans, we shall fight on the beaches, we shall fight on the landing grounds, we shall fight in the fields and in the streets, we shall fight in the hills.
A.
anaphora
B.
repetition
C.
metonymy
D.
overstatement
【单选题】A: We took the first on the left.
A.
B: You SHOULD have taken the first on the right.
B.
B: You should have TAken the first on the right.
C.
B: You should have taken the FIRST on the right.
D.
B: You should have taken the first on the RIGHT.
【单选题】Last week, we surveyed the students in our school on their learning goals. The picture on the right shows the results. ____ out of 60 students don't have any learning goal. [ ]
A.
9
B.
15
C.
21
D.
30
【简答题】汽油是由（）原子和（）原子组成的烃类化合物，其不溶于水的原因是因为烃类化合物为（）性分子。
【单选题】WANTED Do you like to talk with people? Do you like to edit some articles? If you want to work for our newspaper as a part-time editor, please call Karen at 5583666. 20. If you are a college student o...
A.
waiter
B.
baby-sister
C.
cleaner
D.
editor
【简答题】200号溶剂汽油是烃类化合物的混合物，由于其中芳烃含量不同，它表现的（）力也不同。
【简答题】A．We Are Alone on the Internet B．We Are Alone and Together on the Internet C．We Are Communicating on the Internet D．We Are in the Imaginary World of the Internet
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