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【简答题】
核衰变有哪几种类型?遵守哪些物理定律?具有什么规律?有效半衰期的物理意义是什么?
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】用边界值分析法,假定1
A.
X=1，X=2，X=9，X=10
B.
X=2，X=9
C.
X=1，X=10
D.
X=1，X=5，X=6，X=10
【单选题】用边界值分析法,假定 1
A.
X=1, X=100
B.
X=1, X=2, X=99, X=100
C.
X=2, X=99
D.
X=0, X=1, X=99, X=101
【单选题】It is the level for which minimum appropriate protective security measures shall be maintained at all times
A.
At this level, minimum protective security measures shall be kept for a period of time
B.
At this level, maximum protective security measures shall be kept for a period of time
C.
At this level, minimum protective security measures shall be kept all the times
D.
At this level, maximum protective security measures shall be kept all the times
【单选题】用边界值分析法,假定1
A.
X=1，X=100
B.
X=0，X=1，X=100，X=101
C.
X=2，X=99
D.
X=0，X=101
【单选题】用边界值分析法，假定1＜X＜100，那么X在测试中应取的边界值是（）。
A.
X=1，X=100
B.
X=0，X=1，X=100，X=101
C.
X=2，X=99
D.
X=0，X=101
【单选题】用边界值分析法,假定1
A.
x=1,x=100
B.
x=0,x=1,x=100,x=101
C.
x=2,x=99
D.
x=0,x=101
【单选题】The Navigation Rules state that a vessel shall be operated at a safe speed at all times so that she can be stopped within ().
A.
The distance of visibility
B.
1/2 the distance of visibility
C.
A distance appropriate to the existing circumstances and conditions
D.
The distance that it would require for the propeller to go from full ahead to full astern
相关题目：
【单选题】用边界值分析法,假定1
A.
X=1，X=2，X=9，X=10
B.
X=2，X=9
C.
X=1，X=10
D.
X=1，X=5，X=6，X=10
【单选题】用边界值分析法,假定 1
A.
X=1, X=100
B.
X=1, X=2, X=99, X=100
C.
X=2, X=99
D.
X=0, X=1, X=99, X=101
【单选题】用边界值分析法,假定1
A.
X=1，X=100
B.
X=0，X=1，X=100，X=101
C.
X=2，X=99
D.
X=0，X=101
【单选题】用边界值分析法,假定1
A.
x=1,x=100
B.
x=0,x=1,x=100,x=101
C.
x=2,x=99
D.
x=0,x=101