根据“WES”征(Wa-Echo-Shadow)可诊断()
A、胆囊癌
B、胆囊息肉样病变
C、慢性萎缩性胆囊炎,其内充满结石
D、胆总管囊肿
E、胆囊穿孔
A、胆囊癌
B、胆囊息肉样病变
C、慢性萎缩性胆囊炎,其内充满结石
D、胆总管囊肿
E、胆囊穿孔
A、echo The current working path is $PWD. B、echo "The current working path is $PWD." Echo hello C、echo 'The current working path is $PWD.' Echo hello D、echo "The current working path is `pwd`." E、echo The current working path is $PWD. Echo hello
A、向目标主机发送UDP Echo Request数据包,等待对方回应UDP Echo Reply数据包 B、向目标主机发送ICMP Echo Request数据包,等待对方回应ICMP Echo Reply数据包 C、向目标主机发送UDP Echo Reply数据包,等待对方回应ICMP Echo Request数据包 D、向目标主机发送ICMP Echo Reply数据包,等待对方回应ICMP Echo Request数据包