这个标志是何含义?()
A.高速公路服务区
B.高速公路加油站
C.高速公路休息区
D.高速公路客车站
参考答案:B
An analyst adjusts the historical probability of default for high-yield bonds to reflect her perceptions of changes in the quality of high-yield bonds. The analyst is best characterized as obtaining a(n);()
A. a priori probability
B. objective probability
C. subjective probability
PH值是表示水中()性指标。
A.碱度
B.硬度
C.酸碱
D.浓度