问题
单项选择题
The main goals of Network are sharing computer resources .The resources include hardware, data and
A．gateway
B．router
C．software
D．server
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
The main goals of Network are sharing computer resources .The resources include hardware, data and
A．gateway
B．router
C．software
D．server
参考答案：C
牙体缺损较大，用常规的制作方法，烧结完成后烤瓷冠出现瓷裂，最可能引起瓷裂的原因是（）