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【单选题】
下列关于键描述正确的是A.
普通平键的长度应略长于轮毂的长度
B.
普通平键是标准件，其剖面尺寸一般根据轮毂长度按标准选取的
C.
锥形轴与轮毂的键连接常用于楔键连接
D.
普通平键连接的主要用途是使轴与轮毂之间沿固定并传递转距
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【简答题】8MB等于【 】KB。
【简答题】8MB=( )b
【单选题】The boy is fond of playing games and wants to be a programmer .
A.
one who supervises a project
B.
one who organizes activities
C.
one who creates computer programs
【单选题】听力原文：W: Press twelve, please. Thank you. M: You' re welcome. That' s where I' m going. Q: Where did this conversation probably take place? (14)
A.
In a laundry.
B.
In an elevator.
C.
In a library.
D.
In a bakery.
【判断题】I am not a computer programmer, and I have no plan to be a programmer or a software engineer, but I still have to encounter many computer programs in my jobs or life.
A.
正确
B.
错误
【单选题】听力原文：W: May I help you? M: Yes, please. Would you please show me that green shirt? Q: Where are they talking? (19)
A.
In the cinema.
B.
In the post office.
C.
In the store.
【单选题】Tim _________ use computers. He __________to be a programmer.
A.
likes to, 'd like to
B.
'd like to, likes to
C.
want, want
【简答题】Be q____, please. I’m doing my homework.
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