降低门静脉压力有较大作用的术式为
A.肠系膜上静脉,厂腔静脉桥式分流术
B.肠系膜-卜静脉,下腔静脉侧分流术
C.远端脾肾静脉分流术
D.脾肾静脉分流术
E.门腔静脉分流术
参考答案:E
On hearing a phone call from his wife ____ she had a fall, Mr. Gordon immediately rushed
home from his office. [ ]
A. says
B. said
C. saying
D. to say
告警系统及其功能测试应符合下列要求()。
A.对交换、传输、电源及环境系统的故障进行模拟试验,其告警信号指示正确,实时性强;并打印输出,记录完整;
B.模块局、端局、汇接局、关口局、长话局与操作维护中心或与网管中心之间的各种信息传递应迅速正确;
C.交换设备各种告警装置的可闻、可见信号应动作可靠,输出准确;
D.对长途来、去、转话局数据的路由、费率、字冠等作全面核对检查,结果应正确无误。