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【单选题】
操作系统的作用之一是__
A.
把源程序译成目标程序
B.
便于进行数据管理
C.
控制和管理系统资源的使用
D.
实现软硬件的转换
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参考答案：
举一反三
【单选题】下列哪种情形不属于特别重大事故:( )。
A.
造成30人以上死亡
B.
造成100人以上重伤(包括急性工业中毒,下同)
C.
造成1亿元以上直接经济损失
D.
繁忙干线客运列车脱轨18辆以上并中断铁路行车24小时以上;
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【单选题】听力原文：W: How long does it take you to get to work? M: It's only a fifteen minute bus drive early in the morning but coming home from work is quite different it takes at least twenty or thirty minutes. ...
A.
15 minutes.
B.
45 minutes.
C.
35 minutes.
D.
30 minutes.
查看完整题目与答案
【单选题】听力原文：M: How come David is always so full of energy? W: He has a strange but highly effective way of sleeping. M: What is that? W: He takes a short sleep for an hour every six hours and has a total of ...
A.
It's effective.
B.
It's strange.
C.
It's the best.
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【判断题】热继电器的作用是对电路进行短路保护。
A.
正确
B.
错误
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【单选题】Please try these clothes. [     ]
A.
clean
B.
cleaning
C.
cleaned
D.
to clean
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【单选题】When did he finish _____ the house? [     ]
A.
to clean
B.
clean
C.
cleaning
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【单选题】The boy is made__ the room every day. A. clean B. cleaning C. to clean D. cleans
A.
clean
B.
cleaning
C.
to clean
D.
cleans
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【单选题】He needs his room. [     ]
A.
to clean
B.
cleaning
C.
cleans
D.
clean
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【单选题】Tony could help the city parks. [     ]
A.
clean
B.
clean up
C.
clean out
D.
cleans up
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【简答题】Napoga is a 12-year-old girl in Ghana, Africa. It is hard for her family to get clean water. Every morning, she leaves home at half past five to get clean water for her family in a village far away. I...
查看完整题目与答案
相关题目：
【单选题】下列哪种情形不属于特别重大事故:( )。
A.
造成30人以上死亡
B.
造成100人以上重伤(包括急性工业中毒,下同)
C.
造成1亿元以上直接经济损失
D.
繁忙干线客运列车脱轨18辆以上并中断铁路行车24小时以上;
查看完整题目与答案
【单选题】听力原文：W: How long does it take you to get to work? M: It's only a fifteen minute bus drive early in the morning but coming home from work is quite different it takes at least twenty or thirty minutes. ...
A.
15 minutes.
B.
45 minutes.
C.
35 minutes.
D.
30 minutes.
查看完整题目与答案
【单选题】听力原文：M: How come David is always so full of energy? W: He has a strange but highly effective way of sleeping. M: What is that? W: He takes a short sleep for an hour every six hours and has a total of ...
A.
It's effective.
B.
It's strange.
C.
It's the best.
查看完整题目与答案
【判断题】热继电器的作用是对电路进行短路保护。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Please try these clothes. [     ]
A.
clean
B.
cleaning
C.
cleaned
D.
to clean
查看完整题目与答案
【单选题】When did he finish _____ the house? [     ]
A.
to clean
B.
clean
C.
cleaning
查看完整题目与答案
【单选题】The boy is made__ the room every day. A. clean B. cleaning C. to clean D. cleans
A.
clean
B.
cleaning
C.
to clean
D.
cleans
查看完整题目与答案
【单选题】He needs his room. [     ]
A.
to clean
B.
cleaning
C.
cleans
D.
clean
查看完整题目与答案
【单选题】Tony could help the city parks. [     ]
A.
clean
B.
clean up
C.
clean out
D.
cleans up
查看完整题目与答案
【简答题】Napoga is a 12-year-old girl in Ghana, Africa. It is hard for her family to get clean water. Every morning, she leaves home at half past five to get clean water for her family in a village far away. I...
查看完整题目与答案
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