内酯豆腐的生产原理主要基于（）可使蛋白质凝固沉淀。
A、葡萄糖酸钙
B、葡萄糖酸
C、乳酸
D、酒石酸
参考答案：B
多发性骨髓瘤诊断依据之一是血清蛋白电泳图谱出现( )
A．α1-球蛋白↑
B．γ和β区带或γ和β之间有一条密集，染色深的区带
C．γ-球蛋白↑
D．β球蛋白↑
E．α2-球蛋白↑
()divorce is often the only satisfactory solution for married couples who can no longer stand the sight of each other, it can have a shocking effect on their kids.
A. Since
B. While
C. As
D. Unless
