低碱普通水泥的碱含量不得超过()%。
A.1.0
B.0.5
C.0.6
D.0.8
参考答案:C
—Does Jim's father like sports?
—_____. [ ]
A. Yes, it is
B. Yes, he does
C. Yes, he is
D. Yes, I am
T波低平见于()
A.冠状动脉疾患,动脉硬化
B.急性传染病
C.低血钾,低钙
D.尿毒症
E.肾上腺皮质功能减退