A . 蒸汽盘管漏气
B . 硫磺水分含量高
C . 这是正常现象,没有什么原因。
D . 无法判断。
乔伊大学四年的学分绩点很高。这是能反映乔伊的生产率高的强信号吗?为什么?
Joe earned a high grade - point average during his four years of college. Is this achievement a strong signal to Joe' 8 future employer that he will be a highly productive worker? Why or why not?