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【单选题】
如果某一波带片对考察点露出前5个奇数半波带,那么这些带在该点所产生的振动的振幅和光强分别是不用光阑时的多少倍?A.
5
B.
10
C.
2 5
D.
100
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】Dialogue One 2.
A.
Roast turkey and sweet potatoes.
B.
Roast turkey and puddings.
C.
Sweet potatoes and pudding.
D.
Turkey and pumpkin.
【简答题】将 3 封不同的信投入 4 个不同的邮筒,则 有( )种不同 投法。
【单选题】Dialogue Two 2.
A.
Set off firecrackers.
B.
Give Lucky money to the children.
C.
Wear red.
D.
Have reunion dinner.
【简答题】Dialogue One 2.A. Hewants to know what true friends are. B. He wants to borrow money from the woman. C. He wants to share his opinion on friendship with the woman. D. He wants to kill the time.
【单选题】Dialogue Two 2.
A.
Bread and eggs
B.
Bread and tea.
C.
Bacon and potatoes.
D.
None of them
【单选题】Dialogue Two 2.
A.
The man should go out more to have more opportunities to know more people.
B.
The man should wear expensive clothes to make him look handsome.
C.
The man should make more money to make people like him.
D.
The man could join a club or take a class to make some new friends.
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