六淫致病,季节性最明显的是
A. 风邪
B. 寒邪
C. 暑邪
D. 湿邪
E. 火邪
下列因素中,与脑内麻醉药分压无关的是()
A. 吸入麻醉
B. 肺泡通气量
C. 体内降解速率
D. 脑血流量
E. 肺摄取麻醉药速率
The free surface effects of a partially-full tank in a floating ship increase with the ().
A. surface area of the fluid in the tank
B. displacement volume of the ship
C. draft of the ship
D. height of the tank above the keel
收费员核对在用票证和备用票证起止号码,与下一班次售票员办理交接手续,应先(),再操作下班。。
A. 关闭车道灯
B. 关闭电脑
C. 摆放锥形标志
D. 关闭车道栏杆