"呃逆"病名是何人确定下来的()
A.张景岳
B.巢元方
C.张仲景
D.陈无择
E.孙思邈
参考答案:A
自励发电机电压建立的条件是()。
A.有剩磁
B.励磁电流产生的磁通与剩磁通方向一致
C.励磁回路电阻不能太大
D.同时满足有剩磁、励磁电流产生的磁通与剩磁通方向一致、励磁回路电阻不能太大
An analyst is considering two bonds: Bond A yields 7.5% , and Bond B yields 7.0%. Using Bond B as the reference bond, the absolute yield spread and the yield ratio for Bond A are closest to:SpreadRatio()①A. -0.5% 1.07 ②B. -015% 0.93 ③C. 0.5% 1.07
A. ①
B. ②
C. ③