在高压氧下,视网膜动脉表现为()
A.扩张
B.收缩
C.无变化
D.视网膜周边血管扩张,中央部分血管收缩
E.周期性扩张和收缩
参考答案:B
---- Have you heard of the North Korea’s nuclear test ?
---- Yes, _____ news came as _____ shock to me.
A.the; a
B.the; the
C.a; a
D.a; the
患者男,体重60kg,腹泻、呕吐,查血清钠130mmol/L,按公式计算应补钠盐()
A.8.5g
B.10.5g
C.15.5g
D.21g
E.30g