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【单选题】
关于卵巢机能减退的叙述，错误的是( )。A.
是卵巢发育不全或卵巢机能发生暂时性或长久性的衰退
B.
母畜无发情周期，从而表现为不发情
C.
通过直肠对卵巢按摩可促进卵巢机能的恢复
D.
注射抗生素可促进卵巢机能的恢复
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反馈参考答案：
举一反三
【简答题】结构或构件保持其原有平衡形式的能力称为( )
【单选题】The amount of owners' equity in a business is not affected by:
A.
The percentage of total assets held in cash.
B.
The investments made in the business by the owner.
C.
The profitability of the business.
D.
The amount of dividends paid to stockholders.
【单选题】There is a map of ______ outside the gate of the house ______ a garden.The owners must be English. [ ]
A.
English, with
B.
English, has
C.
England, has
D.
England, with
【单选题】Owners' equity in a business increases as a result of which of the following?2
A.
Payments of cash to the owners.
B.
Losses from unprofitable operation of the business.
C.
Earnings from profitable operation of the business.
D.
Borrowing from a commercial bank.
【单选题】如果回归模型中存在多重共线性,则( )
A.
不能对因变量y值进行预测
B.
对因变量y值进行预测时应限定在自变量样本值的范围内
C.
无法对回归系数进行显著性检验
D.
无法对回归模型的线性关系进行检验
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