移动电话通信系统中,只在通话过程中进行动作是()
A.位置登记
B.越区信道切换
C.发出被呼
参考答案:B
—How are you, Jack?
—_____, I'm rather sick.
A.In addition
B.As a matter of fact
C.On the other hand
D.On the contrary
患者男,50岁,缺失,近中舌侧倾斜,以为基牙,应用的卡环是()
A.三臂卡环
B.联合卡环
C.延伸卡环
D.对半卡环
E.圈形卡环