综合资本成本率的高低由个别资本成本率和( )决定。
A．所得税率
B．筹资总量
C．筹资费用
D．资本结构
参考答案：D
— Susan,. why are you still here? They are all ready to start.
— I'm sorry, but I ______ when to meet. [ ]
A. don't tell
B. haven't told
C. wasn't told
患者男，50岁。拔除下颌第一磨牙后，新鲜血液充盈牙槽窝，但不能淹没牙根间隔。正确的处理是（）
A.缝合拔牙创
B.咬除根间隔
C.碘仿纱布覆盖
D.明胶海绵覆盖
E.任其吸收
