【单选题】若事件 相互独立,则下列说法不正确的是( ) .
【判断题】在高差比较大的地方,为了节省工程数量,纵坡大小可以不受限制。( )
【单选题】有关两事件的相互独立性,下列说法正确的是
A.
若 A 与 B 相互独立则 A 与 B 没有任何关系
C.
若 A 与 B 相互独立则 A 与 B 互不相容
D.
若 P(A) 0 ,则 A 与 B 不相互独立
【多选题】Tips of guide to a folk custom area are:
A.
Try to learn some ethnic languages and local dialects
B.
Try to be an expert of folklore
C.
Be familiar with important policy and respect local people
D.
Use various methods and techniques to explain
【单选题】若P(C)>0,P(AB|C)=P(A|C)P(B|C),则A、B称为在C发生的条件下是相互独立的。现令A、B、C是独立事件,P(A)>0,则下列说法正确的是:
【多选题】The tips of a guide to a cul tural landscape are:
A.
Interpreting Popularly
B.
Holding Abundant Knowledge
C.
Preparation and Targeting Interpretation
D.
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E.
Highlighting the Culture and Value
F.
Using Guiding Methods Flexibly
G.
Holding the Aesthetic Feature
【简答题】If you want to sell on Amazon, what selling tips and advise you can getfrom this guide?