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【多选题】
下面关于单边和双边假设检验的说法正确的有A.
双边假设检验的原假设为：
B.
左侧检验和右侧检验统称为单侧检验
C.
拒绝域在左边的检验成为左侧检验
D.
在显著性α水平下， 的假设检验，称为左边检验
E.
拒绝域在右边的，称为右侧检验
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举一反三
【单选题】Fran Stott is of the opinion that Spying might weaken the mutual trust between parents and their children.
A.
Y
B.
N
C.
NG
【简答题】The cause of their inharmonious ______ lay in their lack of mutual trust. (marry)
【简答题】Claire Freeman thinks that lack of mutual trust results in______.
【简答题】13 当轴做单向回转时,平键的工作面在 ;花键的工作面在 ;半圆键的工作面在 ;楔键的工作面在 ;切向键的工作面在 。 a )上、下两面 b )上表面或下表面 c )侧面 d )两侧面A. d ）两侧面 c ）侧面 d ）两侧面 a ）上、下两面 a ）上、下两面
【单选题】The unlevered cost of capital is:
A.
the cost of capital for a firm with no equity in its capital structure.
B.
the cost of capital for a firm with no debt in its capital structure.
C.
the interest tax shield times pretax net income.
D.
the cost of preferred stock for a firm with equal parts debt and common stock in its capital structure.
【单选题】The talk went on in a(n) ________ of mutual trust and respect between the two parties. [ ]
A.
circumstance
B.
background
C.
atmosphere
D.
climate
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