皮皮学，免费搜题
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【单选题】
细胞氧化过程中，电子传递主要发生在()。A.
线粒体基质
B.
线粒体内膜
C.
细胞基质
D.
膜间隙
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】蜂窝移动通信系统主要由移动台、 、 以及操作子系统四个部分构成。
【简答题】.Not until he left his home________to know how important the family was for him. A.did he begin B he begins C.he began D.he has began
【简答题】A．His general health will benefit greatly. B．He will begin to breathe more regularly. C．His flexibility will decrease. D．He will lose weight readily
【单选题】Not until he left his home _____ to know how important the family was for him. [ ]
A.
did he begin
B.
had he began
C.
he began
D.
he had begun
【多选题】一般实验室使用 [填空(1)] 对培养基进行灭菌，它主要有 [填空(2)] 、 [填空(3)] 、 [填空(4)] 等各种类型。
A.
（高压蒸汽灭菌锅）
B.
（手提式）
C.
（立式）
D.
（卧式）
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