21.以下配對何者為正確？1. 無心臟、血管病變，但發高燒 --- bounding pulse2. 嚴重主動脈瓣狹窄 --- pulsus tardus (slowly rising pulse) 及 parvus (reduced amplitude)3. 嚴重左心室功能衰竭 --- pulsus alternans(交替脈)4. Cardiac tamponade --- pulse deficit
(A)1, 2
(B)2, 3
(C)1, 2, 3
(D)1, 2, 4
(E)1, 2, 3, 4