__________在连通器内的同一种液体,各部分直接与大气接触的液面总保持在__________。
静止,同一高度
如图,通过皮带传动的两个皮带轮(皮带和轮不发生相对滑动),大轮的半径是小轮半径的2倍.A、B分别是大小轮边缘上的点,则A、B的线速度v、角速度ω之比是
A.vA:vB =1:1 B.vA:vB =1:2
C.ωA:ωB=1:1 D.ωA:ωB=1:2
The nurse is providing care for a postoperative client who has undergone a small bowel resection. The nurse may use an epidural catheter for which of the following ?()
A.Antibiotic therapy.
B.Pain management.
C.Blood transfusion.
D.Anticoagulation.