急性有机磷农药中毒抢救治疗后，哪种农药可再发生昏迷或突然死亡（）。
A.内硫磷
B.对硫磷
C.乐果
D.敌敌畏
E.以上都不是
参考答案：C
本人之前医保卡丢了，现重新办理了一张。请问初始密码是多少？如何更改初始密码？
The Consol navigation system，used in Russian and Northern European waters，can be used（）.
A.for precise navigation in coastal waters
B.by measuring the phase difference of the dots and dashes
C.as an aid to ocean navigation
D.if the vessel is fitted with a special Consol receiver
