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【单选题】
在 α 粒子散射实验中 , 若把 α 粒子换成质子 , 要想得到 α 粒子相同的角分布 , 在散射物不变条件下则必须使:A.
质子的速度与 α 粒子的相同
B.
质子的能量与 α 粒子的相同
C.
质子的速度是 α 粒子的一半
D.
质子的能量是 α 粒子的一半
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【单选题】What does the author say about the cause（s） of cheating? 查看材料
A.
Family， culture and society play an active part.
B.
Bad school environment is the leading cause of student cheating.
C.
Parents are always to blame for their children's cheating behaviour.
D.
Cheating exists primarily because students learn bad things from TV.
【单选题】What's the major cause in the decline of Asian elephants?
A.
Their taming for circuses and zoos.
B.
The destruction of their natural homes.
C.
Man's lack of knowledge about their behavior.
D.
The greater vulnerability to extinction than other species.
【单选题】What's the major cause in the decline of Asian elephants?
A.
The taming for circuses and zoos.
B.
The destruction of their natural homes.
C.
Man's lack of knowledge about their behavior.
D.
The greater vulnerability to extinction than other species.
【单选题】在存储系统应用，LUN拷贝不包括以下哪种应用场景（）
A.
将数据从本存储系统复制到一个或多个其他存储系统
B.
只能在同类型的存储系统间进行数据复制
C.
将数据从一个或多个LUN其他存储系统复制到本存储系统
D.
将数据从本存储系统中的一个LUN复制到另一个LUN
【单选题】What was the cause of the patient's disease?
A.
Headache.
B.
Stomach trouble.
C.
Disturbance of conscience.
D.
Some unknown physical weakness
【单选题】在存储系统应用,LUN拷贝不包括以下哪种应用场景()
A.
将数据从本存储系统复制到一个或多个其他系统
B.
只能在同类型的存储系统间进行数据复制
C.
将数据从一个或过个LUN其他存储系统复制到本存储系统
D.
将数据从本存储系统中的一个LUN复制到另一个LUN
【单选题】What is a cause for the change of Stefania’s body clock?
A.
Eating fewer hours of sleep.
B.
Having more hours of sleep
C.
Lacking physical exercise.
D.
Getting no natural light.
【单选题】What was the cause of the patient's disease?
A.
Headaches.
B.
Stomach trouble.
C.
Disturbance of conscience.
D.
Some unknown physical weakness.
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