与节律失常有关的脉象是()。
A.结脉
B.代脉
C.促脉
D.动脉
参考答案:A, B, C
My income is rather changeable, but I earn £73 a day ___________.
A.on the other hand
B.in particular
C.on the whole
D.on average
车辆防溜的坡度是指该线(股道)的什么坡度?