一般家畜的后备母畜到第（）个情期时，是最佳的适配年龄。-刷刷题APP

【单选题】启动牛羊母畜分娩决定因素是( )。

A.

机械因素

B.

神经因素

C.

免疫因素

D.

胎儿内分泌变化

E.

母体内分泌变化

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【单选题】最佳修复方案是

A.

直接改为活动义齿修复

B.

采用种植固定义齿修复

C.

全冠修复基牙后再改为活动义齿修复

D.

增加前端基牙数再行固定修复

E.

增加前端基牙数目再行固定活动联合修复

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【单选题】对妊娠母畜能量的供给,妊娠前期一般在维持能量需要量的基础上增加()。

A.

10%.

B.

20%

C.

30%

D.

40%

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【判断题】母畜适宜的配种时期应在体成熟以后，体重达成年体重的80%左右。()

A.

正确

B.

错误

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【判断题】诱导发情可以增加了母畜的繁殖周期，不能提高其繁殖力。

A.

正确

B.

错误

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【单选题】最佳处理方案是( )

A.

静脉应用抗生素

B.

高锰酸钾坐浴

C.

观察

D.

物理治疗

E.

应用抗生素后，切开引流加造口术

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【单选题】Long after the 1998 World Cup was won, disappointed fans were still cursing the disputed refereeing (裁判) decisions that denied victory to their team. A researcher was appointed to study the performanc...

A.

The ideal retirement age for an experienced football referee is 35.

B.

Age should not be the chief consideration in choosing a football referee.

C.

A football referee should be as young and energetic as possible.

D.

An experienced football referee can do well even when in poor physical condition.

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【简答题】[名词解释] 生物最佳粒径

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【单选题】关于母畜产后生理特点的叙述，正确的是（）。

A.

抗病力弱

B.

子宫颈关闭

C.

不易被细菌侵入

D.

食欲旺盛

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【单选题】Long after the 1998 World Cup was won, disappointed fans were still cursing the disputed refereeing(裁判) decisions that denied victory to their team. A researcher was appointed to study the performance...

A.

slightly above average

B.

higher than in the 1998 World Cup

C.

quite unexpected

D.

as high as in a standard match

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