G-6-PD酶缺乏时,下列哪项试验阳性()
A.抗人球蛋白试验
B.蛇毒因子溶血试验
C.酸溶血试验
D.蔗糖溶血试验
E.高铁血红蛋白还原试验
参考答案:E
若f(sinx)=3-cos2x,则f(cosx)=( )
A.3-cos2x
B.3-sin2x
C.3+cos2x
D.3+sin2x
My friend Tom stays at Internet bars above 8 hours every day ______, really a netter(网虫).
A.on average
B.in charge
C.up close
D.for free