血清游离镁约占血清镁()
A.1/2
B.1/3
C.1/4
D.1/5
E.1/10
参考答案:A
解析:血清镁中游离镁约占55%,镁盐15%,与蛋白结合镁30%。
I think the _____ invention is a mobile phone. What about you? [ ]
A. helpful
B. more helpful
C. helpfulest
D. most helpful
肠道病毒71型可引起以下哪些疾病()
A.淋巴结节性咽炎
B.无菌性脑膜炎
C.手-足-口病
D.急性出血性眼结膜炎
E.多发性神经根炎