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问题 单项选择题

可摘局部义齿人工后牙面颊舌径在什么情况下应比真牙窄（）

A.在任何情况下

B.对为真牙

C.对颌牙槽嵴吸收严重

D.缺牙区牙槽嵴吸收较多

E.缺失牙数目较少

答案

参考答案：A

单项选择题

SDLC was invented by IBM to replace the older Bisynchronous protocol for wide area connections between IBM equipment. A varietion of the (71) protocol called NRM is essentially the same as SDLC. SDLC is (72) protocol like HDLC, Frame Relay or X.25.An SDLC network is made up of (73) that controls all communications, and (74) . It is capable of (75) operation, but almost all practical applications are strictly half duplex.

A．a peer to peer

B．a point-to-point

C．not a peer to peer

D．a peer to peers
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单项选择题 A1型题

如果想自动生成目录，那么应在文档中包含（）样式

A.页眉

B.表格

C.页脚

D.标题

E.段落
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