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【多选题】
模型产生异方差性的主要原因有( )A.
模型中遗漏了影响逐渐增大的因素
B.
解释变量中含有滞后变量
C.
模型函数形式的设定误差
D.
随机因素影响
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举一反三
【单选题】When I was your age, I dared not go out alone at night, ________ you?
A.
dared
B.
dare
C.
did
D.
didn’t
【简答题】4I didn’t go out ___ the weather got fine.
【单选题】—Did you dare to go out at night when you were a little child? — No, I didn’t. I don’t have the ______ to go out alone at night even now.
A.
courage
B.
power
C.
ability
D.
chance
【单选题】钢尺丈量直线AB的水平距离，往测为67.240m，返测为67.245m;丈量直线CD的水平距离，往测为48.730m，返测为48.718m。则DAB、DCD应为( )。
A.
67.240m、48.724m
B.
67.243m、48.724m
C.
67.242m、48.724m
D.
67.242m、48.718m
【单选题】--- Did you dare to go out at night when you were a child? --- No, I didn't. I don't have the _______ to go out at night even now.
A.
power
B.
ability
C.
courage
D.
chance
【单选题】When I was you age, I dared to go out alone at night, ________ you?
A.
dared
B.
dare
C.
did
D.
didn’t
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