新X线管首次使用前应进行老化训练,其目的是 A.加热灯丝 B.加热管壳 C.磨合轴承

题型:单项选择题

问题:

新X线管首次使用前应进行老化训练,其目的是

A.加热灯丝
B.加热管壳
C.磨合轴承
D.提高X线管真空度
E.有意缩短其寿命

考点:医技考试放射技士相关专业知识初级放射医学技士相关专业知识
题型:单项选择题

桂枝应用于( )

A.疏散风热,清利头目
B.疏散风热,息风止痉
C.疏散风热,解毒透疹
D.疏散风热,清肝明目
E.疏散风热,疏肝解郁

题型:单项选择题

分析比较Na2SO4、(NH42 SO4、NH4Cl在组成、性质等方面的异同,回答下列问题.

(1)Na2SO4、(NH42 SO4中含有的相同离子是______;

(2)将这三种固体分别与熟石灰混合、研磨,没有氨味产生的是______;

(3)选用下列一种溶液就能将这三种固体鉴别开,该溶液是______;(填序号)

A.稀盐酸            B.氢氧化钡溶液             C.碳酸钠溶液

(4)欲除去K2SO4中混有的少量(NH42 SO4,选择的一种试剂是______.

题型:单项选择题

Jane was walking round the department store. She remembered how difficult _31_ was to choose a suitable Christmas present for her father. She wished that he was as easy _32_ (please)as her mother,who was always delighted with perfume.

Besides,shopping at this time of the year was not _33_ pleasant experience: people stepped on your feet or _34_ (push)you with their elbows(肘部),hurrying ahead to get to a bargain.

Jane paused in front of a counter _35_ some attractive ties were on display. “They are real silk,”the assistant tried to attract her. “Worth double the price. ”But Jane knew from past experience that her _36_ (choose)of ties hardly ever pleased her father.

Jane stopped where a small crowd of men had gathered. She found some good quality pipes _37_ sale. She did not hesitate for long: although her father smoked a pipe only once in a while,she knew that this was a present which was bound to please _38_.

When Jane got home,with her small but well-chosen present in her bag,her parents were already _39_ table having supper. Her mother was excited. “Your father has at last decided to stop smoking,” Jane _40_ (inform).

题型:单项选择题

下列选项哪一个不属于资产证券化产品范畴?()

A.ABCP

B.REITS

C.CDO

D.CDS

题型:单项选择题

公文提纲的内容包括()。

A、公文标题

B、公文开头

C、表述层次及论点、论据、字数安排

D、结尾

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