皮皮学，免费搜题
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搜题
【单选题】
下列哪组氨基酸是人体必需氨基酸
A.
缬氨酸、蛋氨酸、苏氨酸、赖氨酸
B.
亮氨酸、苏氨酸、赖氨酸、甘氨酸
C.
谷氨酸、甘氨酸、氨酸、苏氨酸
D.
谷氨酸、亮氨酸、氨酸、色氨酸
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【单选题】W: Hello, emergency line. What can I do for you? M: I am calling to report an accident. W: Could you give me some details, sir? M: A truck hit a car on Highway 204. W: Has anyone been badly ...
A.
A passer-by.
B.
The car driver.
C.
The truck driver.
D.
A policeman.
查看完整题目与答案
【单选题】The man， __________ is parked in front of our house， is a famous artist．
A.
the red car of which
B.
who's red car
C.
of whom the red car
D.
whose red car
查看完整题目与答案
【单选题】( )应采用相对独立分级设计,当其中任何一级系统故障时,均不应影响其他系统的正常运行:当故障解除后,应能自动进行系统的恢复处理。系统关键设备应冗余设置,重要数据应备份。
A.
列车自动运行系统
B.
车站联锁系统
C.
自动售检票系统
D.
行车指挥系统
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【简答题】短文改错。 The lights were red, and the old man stopped his car and waited them to change to green. While he was waiting, a police car came up, hitting his car in its back and then stopped. There are two p...
查看完整题目与答案
【单选题】( )应采用相对独立分级设计,当其中任何一级系统故障时,均不应影响其他系统的正常运行:当故障解除后,应能自动进行系统的恢复处理。系统关键设备应冗余设置,重要数据应备份。
A.
车站联锁系统
B.
自动售检票系统
C.
列车自动运行系统
D.
行车指挥系统
查看完整题目与答案
【单选题】The young man was driving his new car, bought only three days ago, in the__________of the airport, when an accident happened.
A.
way
B.
path
C.
route
D.
direction
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【简答题】阅读理解。 A man was travelling abroad in a small red car．One day he left the car a nd went shopping.When he came back, its roof was badly damaged(损害)．Some boys told him that  an  elephan t had damaged it．...
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【多选题】在root身份下在/tmp目录下创建一个abc.txt,则下列说法正确的是:
A.
切换到student身份，可以通过vim编辑/tmp/abc.txt
B.
切换到student身份，不可以通过vim编辑/tmp/abc.txt
C.
切换到student身份，可以删除/tmp目录下的文件abc.txt
D.
切换到student身份，不可以删除/tmp目录下的文件abc.txt
查看完整题目与答案
【单选题】听力原文：M: The man at the gate thinks that I take good care of my car. W: Why does he think that? M: He couldn't see any dirty spots on the outside and the inside is clean, too. Q: What do you learn abou...
A.
He keeps his car in good condition.
B.
He has an accident.
C.
He is careless with his car.
D.
He likes old cars.
查看完整题目与答案
【单选题】W: Think about this carefully. you must have left them somewhere. M: But the problem is that I need them now. I need them to start my car, and when I get home I have to use them to open the door. W: M...
A.
He lost his wallet
B.
He couldn't find his keys.
C.
He lost his mobile phone.
D.
He couldn't find his way.
查看完整题目与答案
相关题目：
【单选题】W: Hello, emergency line. What can I do for you? M: I am calling to report an accident. W: Could you give me some details, sir? M: A truck hit a car on Highway 204. W: Has anyone been badly ...
A.
A passer-by.
B.
The car driver.
C.
The truck driver.
D.
A policeman.
查看完整题目与答案
【单选题】The man， __________ is parked in front of our house， is a famous artist．
A.
the red car of which
B.
who's red car
C.
of whom the red car
D.
whose red car
查看完整题目与答案
【单选题】( )应采用相对独立分级设计,当其中任何一级系统故障时,均不应影响其他系统的正常运行:当故障解除后,应能自动进行系统的恢复处理。系统关键设备应冗余设置,重要数据应备份。
A.
列车自动运行系统
B.
车站联锁系统
C.
自动售检票系统
D.
行车指挥系统
查看完整题目与答案
【简答题】短文改错。 The lights were red, and the old man stopped his car and waited them to change to green. While he was waiting, a police car came up, hitting his car in its back and then stopped. There are two p...
查看完整题目与答案
【单选题】( )应采用相对独立分级设计,当其中任何一级系统故障时,均不应影响其他系统的正常运行:当故障解除后,应能自动进行系统的恢复处理。系统关键设备应冗余设置,重要数据应备份。
A.
车站联锁系统
B.
自动售检票系统
C.
列车自动运行系统
D.
行车指挥系统
查看完整题目与答案
【单选题】The young man was driving his new car, bought only three days ago, in the__________of the airport, when an accident happened.
A.
way
B.
path
C.
route
D.
direction
查看完整题目与答案
【简答题】阅读理解。 A man was travelling abroad in a small red car．One day he left the car a nd went shopping.When he came back, its roof was badly damaged(损害)．Some boys told him that  an  elephan t had damaged it．...
查看完整题目与答案
【多选题】在root身份下在/tmp目录下创建一个abc.txt,则下列说法正确的是:
A.
切换到student身份，可以通过vim编辑/tmp/abc.txt
B.
切换到student身份，不可以通过vim编辑/tmp/abc.txt
C.
切换到student身份，可以删除/tmp目录下的文件abc.txt
D.
切换到student身份，不可以删除/tmp目录下的文件abc.txt
查看完整题目与答案
【单选题】听力原文：M: The man at the gate thinks that I take good care of my car. W: Why does he think that? M: He couldn't see any dirty spots on the outside and the inside is clean, too. Q: What do you learn abou...
A.
He keeps his car in good condition.
B.
He has an accident.
C.
He is careless with his car.
D.
He likes old cars.
查看完整题目与答案
【单选题】W: Think about this carefully. you must have left them somewhere. M: But the problem is that I need them now. I need them to start my car, and when I get home I have to use them to open the door. W: M...
A.
He lost his wallet
B.
He couldn't find his keys.
C.
He lost his mobile phone.
D.
He couldn't find his way.
查看完整题目与答案