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【单选题】
我国宋代出现了享誉中外的五大官窑,分别为汝窑、官窑、哥窑、( )和定窑。A.
长沙窑
B.
龙泉窑
C.
钧窑
D.
窑
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反馈参考答案：
举一反三
【简答题】小孔成像 上下颠倒, 那么小孔成像中所成的像左右颠倒吗?
【判断题】Each B cell only expresses a single type of receptor to recognize a single type of antigen
A.
正确
B.
错误
【单选题】_________ is the only phase of DNA replication that is known to be regulated, and it is regulated such that replication occurs only once in each cell cycle.
A.
Initiation
B.
Elongation
C.
Termination
D.
Repair
【单选题】Which is the following is NOT the function of each glia cell ?
A.
Astrocyte: regulates neuron transmitter in CNS
B.
Microglia: Remove dead neuron cell in CNS
C.
Astrocyte: form blood-brain barrier
D.
Schwann cell: Form myelin sheaths in CNS
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