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【单选题】
双向免疫扩散试验中,如抗体浓度大于抗原浓度,则沉淀线A.
靠近抗原
B.
靠近抗体
C.
在两中间
D.
呈多条沉淀线
E.
以上均不是
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举一反三
【单选题】The fossil consists of a complete skull of an archaeocyte, an extinct group of ancestors of modern cetaceans. Although limited to a skull, the Pakicetus fossil provides precious details on the origin...
A.
hearing structures
B.
adaptations for diving
C.
skull shapes
D.
breeding locations
【多选题】Please choose abnormal size and shape of skull
A.
Microcrania
B.
Tower skull
C.
Dolichocephalia
D.
Large skull
【单选题】How did the skull die according to the fable Zhuangzi and the Skull?
A.
Some insatiable ambition or disgraceful behavior have brought the skull to death
B.
The skull’s country had been conquered and he had been killed by his enemies.
C.
He committed suicide because he did something evil that disgraced his family
D.
How he died remained a mystery but he is happy with his life as a dead man
【简答题】轴承6308的轴承类型是(),轴承内径() mm。
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