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【单选题】
某化合物的浓度为1.0×10^(-5)mol/L,在λmax=380nm时,其透射比为50%,用1.0cm吸收池,则在该波长处的摩尔吸收系数εmax/[L/(mol×cm)]为
A.
5.0×10^4
B.
2.5×10^4
C.
1.5×10^4
D.
3.0×10^4
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【单选题】When you meet your friend again, what won't you say?
A.
Long time no see.
B.
How are you these days?
C.
Haven't see you for ages.
D.
Nice to meet you.
【单选题】When your friend says:”Have you made any plan to visit Beijing?” you may say _______
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Yes, I ‘m thinking of it.
B.
That’s a great idea.
C.
Really? I can’t believe it
【多选题】导致老年人孤独的常见原因是
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丧偶
B.
病魔缠身
C.
空巢家庭
D.
进食障碍
【多选题】导致老年人孤独的常见原因是( )
A.
丧偶
B.
病魔缠身、行动不便
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空巢家庭
D.
退休
E.
性格孤僻
【单选题】C#语言的核心是面向对象编程(OOP),所有OOP语言都应至少具有3个特性
A.
封装、继承和多态
B.
类、对象和方法
C.
封装、继承和派生
D.
封装、继承和接口
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A.
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B.
多态性
C.
继承
D.
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【单选题】Students should try to strike a balance between listening, understanding and making notes.
A.
a
B.
b
C.
c
D.
d
E.
e
F.
f
G.
g
【单选题】When your friend told you that you’ve got the scholarship, you may say:_______by showing your surprise.
A.
That’s not true.
B.
Are you serious?I can’t believe it.
C.
You must be making fool of me .
【多选题】下列特性是C++不具备的OOP特性的有()
A.
接口
B.
C.
D.
多重继承
【单选题】Try to balance the following reaction.
A.
x=1 y=2 z=3 a=1 b=5 c=1 d=3
B.
x=1 y=5 z=1 a=1 b=5 c=1 d=1
C.
x=2 y=5 z=3 a=1 b=5 c=2 d=3
D.
x=2 y=5 z=2 a=1 b=5 c=2 d=2
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