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【单选题】
淬火后的钢为什么要回火?A.
提高其硬度和延展性。 。
B.
降低其延展性和脆性。
C.
以提高其强度并降低其内应力。
D.
以消除其内应力，防止变形或开裂
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【简答题】A manager can get the information he needs from ______.
【简答题】A．He thinks it is difficult to get fuel for the car. B．He can manage to get the gasoline they need. C．He doesn't think it necessary to refuel the car. D．He hopes the woman will help him select a fuel.
【简答题】A．He can gain more popularity. B．He can get more attention now. C．He can make more money now. D．He can choose more or less now.
【单选题】What happens if a caller presses 1?
A.
He can leave a message.
B.
He can get a monthly schedule.
C.
He can find out about tickets.
D.
He can get on the mailing list.
【简答题】编制分布数 列_成绩及性别.xls 作业:教育程度和工资水平.XLS
【简答题】A．He can't get a room at the hotel. B．He didn't get the type of room he wanted. C．He expected the room to be more expensive. D．He thought he had already made a reservation.
【简答题】写出以下单词的基数词 12__________
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