肛提肌的作用包括（） A.加强盆底托力 B.加强 * * 括约肌 C.加强肛门括约肌 D.

干姜黄芩黄连人参汤与黄连汤证有何不同？

儿童甲状腺功能亢进主要见于以下哪种情况（）

A.外源性甲状腺素摄入过多

B.弥漫性毒性甲状腺肿

C.甲亢性甲状腺癌

D.淋巴细胞性甲状腺炎

E.亚急性甲状腺炎

An analyst does research about the limitations of cash flow yield. Which of the following statements is least accurate to be a shortcoming in application of the cash flow yield measure（）

A. The projected cash flows are assumed to be reinvested at the cash flowyield.

B. The mortgage-backed or asset-backed security is assumed to be held until the final payoff of all the loans, based on some prepayment assumption.

C. Because of principle prepayments, in order to project cash flow it is necessary to make an assumption about the rate at which principle prepayments will occur.

压缩性骨折最常发生于

A．椎骨

B．股骨

C．肱骨

D．尺骨

E．腓骨

煤样是指从大量煤种抽取出来的少量的、具有代表性的，以供分析化验用的煤。