癌性空洞与结核性空洞鉴别的关键点在于前者()
A.空洞较大
B.空洞周围可见纤维条索
C.空洞内有液平
D.空洞边界不清楚
E.洞壁凹凸不平,可见壁结节
参考答案:E
进行注水操作倒流程时,要注意必须先关,后开,先开井口,后开配水间注水闸门,要按配注方案进行()注水。
A、定压定时
B、定时定量
C、定点定量
D、定压定量
For each person it is certified to carry,a lifeboat on an oceangoing passenger vessel must be provided with all of the following EXCEPT().
A.3 litres of water
B.1 unit of provisions
C.1 seasickness kit
D.1 life preserver