抗日山烈士陵园依山而建,分为几个坡段,多少个台阶?
参考答案:抗日山烈士陵园依山而建,分为八个坡段,363个台阶。
一水平的浅色长传送带上放置一煤块(可视为质点),煤块与传送带之间的动摩擦因数为μ。初始时,传送带与煤块都是静止的,现让传送带以恒定的加速度a0开始运动,当其速度达到v0后,便以此速度做匀速运动经过一段时间,煤块在传送带上留下了一段黑色痕迹后,煤块相对于传送带不再滑动求此黑色痕迹的长度。
The nurse is caring for four clients on a step-down intensive care unit. The client at the highest risk for developing nosocomial pneumonia is the one who()
A. has a respiratory infection.
B. is intubated and on a ventilator.
C. has pleural chest tubes.
D. is receiving feedings through a jejunostomy tube.