根据运作方式的不同，可以将基金分为( )。
A．债券基金
B．封闭式基金
C．股票基金
D．开放式基金
参考答案：B,D
治疗青春期无排卵性功血，应首选哪项措施
A．大剂量孕激素B．大剂量雌激素C．分段诊刮术D．雌、孕激素序贯法E．电凝或激光子宫内膜去除术
A client is diagnosed with a herniated lumbar disk at the L-5 interspace. Which of the following symptoms would most likely be the one that first caused the client to seek health care（）
A. Loss of voluntary muscle control.
B. Loss of bladder control.
C. Back pain that is relieved with resting.
D. Back pain that radiates to the shoulders.
