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【单选题】
下列哪一项不是乳牙拔除适应证A.
牙冠破坏严重，无法修复的乳牙
B.
替换期，牙根吸收1/3以上，不能做根管治疗者
C.
根尖炎症侵及恒牙牙胚，或恒牙牙根已形成3/4或恒牙牙胚顶端牙槽骨已消失
D.
外伤不能保留的乳牙
E.
Ⅱ度松动的乳牙
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A.
when
B.
until
C.
since
D.
before
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【单选题】The old lady had a ______ escape when she pass across the road in front of the bus.
A.
close
B.
short
C.
narrow
D.
fine
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A.
none of them
B.
both of whom
C.
none of whom
D.
neither of whom
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【单选题】以下意念性失用与意念运动性失用的主要鉴别的正确的是()
A.
意念性失用者能正确执行口令，意念运动性失用者不能
B.
意念性失用者能正确模仿动作，意念运动性失用者不能
C.
意念性失用者能正确完成实物操作，意念运动性失用者不能
D.
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【单选题】10Base-T以太网中,以下说法不对的是:
A.
10Base-T是以太网的一种配置
B.
10指的是传输速率为10MBPS
C.
T指的是双绞线
D.
Base指的是基带传输
【单选题】10BASE-T以太网中,以下说法不对的是()
A.
10指的是传输速率为10Mbps
B.
Base指的是基带传输
C.
T指的是以太网
D.
10Base-T是以太网的一种配置
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