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【单选题】
下列哪项属于副交感神经的作用A.
、瞳孔扩大
B.
糖原分解增加
C.
逼尿肌收缩
D.
消化道括约肌收缩
拍照语音搜题，微信中搜索"皮皮学"使用
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【单选题】计算机网络互联设备,( )理论上来理解它就是一台多端口的网桥。主要功能是利用物理地址或者说MAC地址来确定转发数据的目的地址。
A.
中继器
B.
集线器
C.
交换机
D.
路由器
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【单选题】The advertisement tells us that the book which goes with the exhibition ______ .
A.
is called Londoners
B.
is called Britain
C.
contains only 20 pictures
D.
contains less than 200 illustrations
【单选题】All the students in this university are requested to comply with the regulations.
A.
required
B.
demanded
C.
ordered
D.
expected
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【单选题】The teacher asked all the students in the class to keep their eyes ______ for 5 seconds.
A.
close
B.
to close
C.
closing
D.
closed
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