正常镀锌电解液中锌离子的补充靠（）
A.氧化锌
B.加锌粉
C.锌阳极溶解
D.加锌合金
参考答案：C
She ________a German. She has _______him for three years.
A．married with; married with
B．married; married
C．married to; been married
D．married; been married to
尿毒症最早期、最多见的临床表现是（）.
A.皮肤瘙痒
B.胃肠道症状
C.贫血
D.高血压
E.抽搐
