A.两灯一样亮
B.L1比L2亮
C.L1比L2暗
D.两灯都能正常发光
答案:C
下列图示中能正确反映DNA溶解度与NaCl溶液浓度之间关系的是[ ]
A.
B.
C.
D.
()all we should put the theory into practice.
A.Beside
B.To
C.Above
D.Of