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【单选题】
下面关于Applet程序的描述中，错误的是（ ）。A.
Applet程序的主类必须是Applet类的子类
B.
Applet程序的主类中应有一个main（）方法
C.
Applet不是完整的独立程序
D.
Applet的字节码文件必须嵌套在一个HTML文件中
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【单选题】—I called you at 6 o'clock yesterday evening, but nobody answered. — I'm sorry. I my friend download the movie Kung Fu PandaⅡwhen the telephone rang,
A.
would help
B.
helped
C.
was helping
【单选题】Client: Hello. May I speak to Mr. Turner? Secretary:________
A.
I'm sorry. He's at a meeting now.
B.
I am. Speak, please.
C.
Hello. Who're you, please?
D.
Hello. Thank you for calling.
【单选题】Client: Hello. May I speak to Mr. Turner? Secretary: ______
A.
I'm sorry. He's at a meeting right now.
B.
Speaking, please.
C.
Hello. Who're you, please?
D.
Hello. Thank you for calling.
【单选题】Mary prefers ____ for a walk rather than ____ at home.
A.
to go; staying
B.
going; to stay
C.
to go; stay
D.
going; staying
【单选题】--- What about inviting Mary to our party? --- You’d better not. She prefers to be ____, so far as I know.
A.
tested out
B.
rung up
C.
left alone
D.
turned around
【单选题】下列表述中哪一项不属于分布式数据库的特点? ( )
A.
系统的可靠性高、可用性好
B.
对数据通信的处理使得局部应用的响应速度很慢
C.
系统开销较大，主要花在通信部分．
D.
数据的安全性和保密性较难处理
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