临床上根据病变的深度,龋病可分为()
A.急性龋,慢性龋,继发龋
B.面龋,颈部龋,根面龋
C.急性龋,慢性龋,静止龋
D.浅龋,中龋,深龋
E.以上都不是
参考答案:B
A two-year-old girl named Niu Niu, _______ falling from the IOth floor of a building, was caught by a "super-mother" Wu Juping with her bare arms.
A.having been noticed
B.noticing
C.being noticed
D.having noticed
套利定价模型(APT)与资本定价模型(CAPM)相比,其特点在于()。
A.APT建立在"一价原理"的基础上
B.资本资产定价模型只能告诉投资者市场风险的大小,却无法告诉投资者市场风险来自何处,APT明确指出了影响资产收益率的因素都有哪些
C.与CAPM-样,APT假设投资者具有单一的投资期
D.投资者可以以相同的风险利率进行无限制的借贷