调节阀的相对流量与()成直线关系,这时调节阀是直线特性的。
A.开度
B.相对开度
C.可调性
D.等百分比
参考答案:B
_____ the English examination I would have gone to the concert last Sunday.
A.In spite of
B.But for
C.Because of
D.As for