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【单选题】
三条补体激活途径的共同点是()
A.
C3转化酶的组成相同
B.
激活物质相同
C.
膜攻击复合物的形成及其溶解细胞效应相同
D.
参与的补体成分相同
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【判断题】焦糊食物中的苯并芘要比普通食物增加10到20倍。苯并芘是一种致癌物质。
A.
正确
B.
错误
【简答题】When an ant dies, other ants take it out of the nest, often within an hour after its death. This behavior interests scientists and they wonder how ants know for sure—and so soon—that another ant is de...
【简答题】Translate the following sentences into Chinese. Pay attention to the phrases indicating "death". 1. He paid the debt of nature last night. 2. Your daughter is six feet under because of you. 3. Those g...
【单选题】某燃气企业在进行职业病危害专项检查时,对检查出的职业病危害因素进行了分类下列按照职业病危害因素来源进行分类的说法中,正确的是( )。
A.
客服大厅的工作台与座椅高度不匹配,属于劳动过程中产生的有害因素
B.
燃气管线的巡线人员网格点分配过多,属于生产过程中产生的有害因素
C.
燃气管线的巡线人员夏天容易中署,属于劳动过程中产生的有害因素
D.
加气站的维修工长期工作在噪声条件下,属于生产环墳中的有害因素
【单选题】平面汇交力系的合成结果是( )
A.
一扭矩
B.
一弯矩
C.
一合力
D.
不能确定
【简答题】Spot Dictation 5
【单选题】平面汇交力系的合成结果是
A.
一合力
B.
一扭矩
C.
一弯矩
D.
不能确定
【单选题】Origin of languages and culturesAll people on the earth had one language and the same words. When they traveled east, they found a valley in the land of Shinar and settled there. They said to each oth...
A.
The LORD decided to mix up language so people can understand each other's language.
B.
People used bricks for stones and asphalt for mortar.
C.
People decided to make a name for themselves so that they won't be dispersed over all the earth.
D.
All people on the earth had one language and the same words at the beginning.
【简答题】选择以下单词,填入下面短文中 invent, doubt, mention, nearly, website, all of sudden It is often difficult to decide on the inventor of certain inventions. This is because sometimes a few people may ______ thin...
【简答题】When I arrived at the Banner 1 ______________ I was so impressed by the fact that they came to me. I didn’t really want to 2. ______________. They came up to me and said, “Well, is there something we ...
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