混合痔手术选用
A．局麻
B．静脉麻醉
C．气管内麻醉
D．蛛网膜下腔麻醉
E．基础麻醉
参考答案：D
Jingjiang is_______ the east of Jiangsu and_____ the east of Nanjing.
A．in; in
B．to; to
C．in; to
D． to; in
Firewall is a (74) mechanism used by organizations to protect their LANs from the Internet.
A．reliable
B．stable
C．peaceful
D．security
