NK细胞所不具备的生物学功能是()。 A.非特异杀伤肿瘤靶细胞 B.非特异杀伤某些病

题型:单项选择题 A1型题

问题:

NK细胞所不具备的生物学功能是()。

A.非特异杀伤肿瘤靶细胞

B.非特异杀伤某些病毒感染的靶细胞

C.通过ADCC作用杀伤肿瘤和病毒感染的靶细胞

D.通过释放穿孔素杀伤肿瘤靶细胞

E.通过释放蛋白水解酶杀伤病毒感染的靶细胞

考点:口腔执业医师医学免疫学医学免疫学题库
题型:单项选择题 A1型题

以下对劳合社的性质表述错误的是()。

A、劳合社是一 * * 险公司

B、劳合社是一个社团

C、劳合社是一个民间组织

D、劳合社其成员各干各的,各自对其承保的业务负责

题型:单项选择题 A1型题
用方框中所给单词的适当形式填空,使短文完整正确。(每个单词限用一次)
read, from, movies, festival, held, sound, action, special, as, show
     The Chicago International Children's Film Festival is the largest festival of films for children in North
America.The 27th Chicago International Children's Film Festival will be _ l__ on October 22, 2010.Two
hundred and twenty-five movies    2  _ forty countries will be on 3. There are many kinds of movies, like
    4    movies, documentaries and comedies.Some movies are kids' works(作品).The    5    are all good
and new.
     Every year, 25, 000 children, adults and educators from Chicago join the    6    . The kids are from
three to sixteen years old. For kids at the age of three to five, they have    7  _ movies for them to see.
They are known    8    "My first movies. "
     Professional actors will    9    the English subtitles (字幕) aloud for programs for kids eight years old
and  under. The __10__ from the film will be audible(听得见) while subtitles are read.
     The festival is at Facts Cinema.You can call 773 -281 - 9075 for other things.
题型:单项选择题 A1型题

“新亚欧大陆桥”的主要路线是?

题型:单项选择题 A1型题

检验检疫法律法规规定,进口动物、动物产品、植物种苗及繁殖材料、粮食、水果等必须办理检疫审批手续。 ( )

题型:单项选择题 A1型题

查看浮子液位开关的()的方法是:向导管内灌水看浮子是否动作

A、浮子是否破裂

B、电气部分

C、电气部分的接线

D、机械部分

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