“阳明温病,下之不通”,若兼见“神昏舌短,内窍不通,饮不解渴”的表现,说明其病机兼有()
A.正虚不能运药
B.肺气不降
C.火腑不通
D.邪闭心包
参考答案:D
下面哪一项是材料冲击韧性的定义?()
A.抵抗弹性变形的能力
B.抵抗断裂破坏的能力
C.抵抗局部塑性变形的能力
D.抵抗冲击载荷的能力
Deck foam systems,designed to protect cargo areas on tankers built after January 1,1975,must have a supply of foam-producing material to operate the system at its designed rate of foam production for().
A.15 minutes without recharging
B.20 minutes without recharging
C.25 minutes without recharging
D.30 minutes without recharging