A client is admitted with atrial fibrillation. The physician noted a pulse deficit. The pulse deficit measures which of the following（）

A. The difference between apical and radial pulse rates.

B. The difference between systolic and diastolic blood pressures.

C. The amount of blood ejected from the left ventricle per minute.

D. The percentage of blood emptied from the ventricle during contraction.

中国素有“自行车大国”之称，自行车作为人的主要代步工具在我国20世纪80年代广泛流行。但20世纪90年代以后，随着生活水平的提高，许多人带来了一系列的问题。因此，有人认为汽车工业的快速发展弊大于利，也有人认为它利大于弊。请结合实际谈谈你的看法。