羊水栓塞DIC阶段的处理原则是：
A．抗休克
B．早期抗凝
C．补充凝血因子
D．晚期抗纤溶，同时补充凝血因子
E．晚期抗纤溶
参考答案：B,C,D
My pen pal said he would write to me, but I ______ any letters from him so far. [ ]
A. won't receive
B. haven't received
C. hadn't received
D. didn't receive
确定与传染病接触者的检疫期(医学观察时间)是根据该传染病的
A．最短潜伏期
B．最长潜伏期
C．平均潜伏期
D．传染期
E．前驱期
