DIC出血原因( )
A．血小板数量减少B．多种凝血因子消耗C．血管壁异常D．凝血因子合成障碍E．遗传性凝血因子缺乏
参考答案：B
We haven't settled the question of ______ it is necessary for him to study abroad.
A．if
B．where
C．whether
D．that
技术交底的方式有（）
A、书面交底
B、会议交底
C、口头交底
D、简接交底
