有关官内节育器的避孕原理,正确的是
A.抑制卵巢排卵
B.阻止精于进入宫腔及输卵管
C.影响子宫内膜发育
D.干扰下丘脑—垂体—卵巢轴
E.干扰受精卵着床
参考答案:E
( )是将资金委托专业经理人全权处理,用于投资黄金类产品。
A.黄金基金
B.纸黄金
C.条块现货
D.黄金期货期权
The client is to receive an IV infusion of 3000 mL of dextrose and normal saline solution over 24 hours. The nurse observes that the rate is 150mL/hour. If the solution runs continuously at this rate, the infusion will be completed in ().
A.12 hours.
B.20 hours.
C.24 hours.
D.50 hours.