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【单选题】
关于肝细胞的描述,下列哪错误的
A.
胞体大,呈多边形
B.
核大而圆,居中,胞质呈嗜酸性
C.
细胞血面与血液进行物质交换
D.
细胞胆小管面分泌胆汁
E.
细胞连接面仅有紧密连接封闭细胞间隙
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参考答案:
举一反三
【单选题】What does she look like? [     ]
A.
She is well.
B.
She is good.
C.
She is tall.
D.
She likes her.
【单选题】以下哪种物质在PCR反应中不需要
A.
Taq DNA聚合酶
B.
dNTPs
C.
引物
D.
RNA酶
E.
合适的PH缓冲液
【单选题】Mcguire proposed Labor Day in order to ______.
A.
draw people's attention to the striking contrast between the rich and the poor
B.
make prominent the important role of the working class in society
C.
win for the workers the right to shorter working hours
D.
expose the exploitation of the workers by their bosses
【单选题】以下哪种物质在PCR反应中不需要
A.
Taq DNA 聚合酶
B.
dNTPs
C.
Mg2+
D.
RNA 酶
【单选题】McGuire proposed Labor Day in order to ______.
A.
draw people's attention to the striking contrast between the rich and the poor
B.
make prominent the important role of the working class in society
C.
win for the workers the right to shorter working hours
D.
expose the exploitation of the workers by their bosses
【单选题】—What does your sister do ? — . [     ]
A.
She is in the supermarket.
B.
She is very tall.
C.
She is a teacher.
D.
She is fine.
【判断题】红外光导摄像管中,红外图像所产生的温度分布可以把靶面上感应出相应电压分布图像的物理基础是光电效应。
A.
正确
B.
错误
【单选题】以下哪种物质在PCR反应中不需要
A.
Taq DNA聚合酶
B.
dNTPs
C.
镁离子
D.
RNA酶
【简答题】—What does your sister do ? — . A.She is in the supermarket. B,She is very tall. C.She is a teacher. D.She is fine.
【单选题】红外光导摄像管中,红外图像所产生的温度分布可以在靶面上感应出相应电压分布图像的物理基础是( )。
A.
压电效应
B.
电磁感应
C.
光电效应
D.
热电效应
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