问题
选择题
You know, ______ knowledge of _____ computer is necessary to a secretary(秘书).[ ]
A: a; /
B: the；the
C: the; /
D: a; a
答案
答案：A
搜题请搜索小程序“爱下问搜题”
You know, ______ knowledge of _____ computer is necessary to a secretary(秘书).[ ]
A: a; /
B: the；the
C: the; /
D: a; a
答案：A
缺失，余留牙正常，进行可摘局部义齿修复，基牙
设计弯制卡环。
上的弯制卡环所用钢丝规格为