何谓脑水肿？试述其分类与发病机制。

烟火药制造过程中的防火防爆措施中，烟火药的配制和混合时要严把( )三道关口。

A．领药、称药、混药
B．领药、装药、筑药
C．领药、装药、运药
D．领药、混药、装药

孕期胰岛素用量特点（）

A.早孕期由于呕吐酸中毒，用量应加大

B.随孕周增长，胰岛素用量逐渐减少

C.糖尿病患者用量高峰在32～33周

D.体重越大，用量越大

E.出现水肿，应慎用

80286在保护模式下的虚拟空间大小以及实际地址空间大小分别是( )。

A．1GB、32MB

B．16MB、2MB

C．1GB、16MB

D．16MB、1MB

Woman: If the weather is this hot tomorrow, we may as well give up the idea of playing tennis in the afternoon.Man: Oh, I don't think it'll last long. The weather forecast says it will cloud over by midafternoon.Question: What does the man mean

A．Weather forecasts are not reliable.

B．They'd better change their mind.

C．The tennis game won't last long.

D．They shouldn't change their plan.

民航空管运行单位实施的SMS是（）的简称。