奶牛产后第一次正常发情多发生在() A.产后10~15d B.产后20~25d C.

题型:单项选择题 A1型题

问题:

奶牛产后第一次正常发情多发生在()

A.产后10~15d

B.产后20~25d

C.产后30~40d

D.产后35~50d

E.产后70~80d

考点:执业兽医考试兽医产科学兽医产科学题库
题型:单项选择题 A1型题

Visitors to this country are normally admitted for six months, but foreign students can usually stay for one year. They must (54) an educational institution, and they are required to study for a (55) of fifteen hours a week on a daytime course. Prospective students have to show that they can afford their studies, and that they have sufficient (56) resources to support themselves (57) in this country.

In order to work here the foreigner needs a work permit, (58) must be applied for by his prospective employer. The problem here is that the Department of Employment has the right to grant or (59) these permits, and there is little that can be done (60) it; it would be extremely unwise for a foreign visitor to work (61) a permit, since anyone doing so is liable to immediate deportation (驱逐出境). There are some people from the European countries, who are often given (62) residence permits of up to five years. Some other people, such as doctors, foreign journalists, authors and others can work without permits, and foreign students are normally allowed to (63) part-time jobs while they are studying here.

56().

A.natural 

B.financial 

C.human 

D.economical

题型:单项选择题 A1型题

2011年3月11日,日本东北地区海域发生里氏9.0级地震,使人们更加关注地震预测这一世界性难题,你知道世界上最早发明测量地震方位仪器的是谁吗?[ ]

A.祖冲之

B.僧一行

C.张衡

D.郦道元

题型:单项选择题 A1型题

急性荨麻疹伴有喉头水肿或过敏性休克时应立即()

A.肌内注射苯海拉明或氯苯那敏

B.静脉滴注地塞米松或氢化可的松

C.给予第二代抗组胺药

D.静脉滴注钙剂或维生素C

E.皮下注射0.1%肾上腺素

题型:单项选择题 A1型题

在《失业保险条例》中提到“非因本人意愿中断就业”的申请条件,请问怎样才算非因本人意愿中断就业?有什么特征可以说明我是非因本人意愿中断就业的呢?

题型:单项选择题 A1型题

在阶跃多模光纤中,传输路径最长的模是()。

A.基模

B.高阶模

C.低阶模

D.包层模

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