黄酮苷元呈平面型分子结构,但水溶性较大的是
A.查耳酮B.花色素C.二氢黄酮D.黄酮醇E.黄烷
参考答案:B
I can’t persuade him out of playing computer games. He is to them.
A.reminded
B.accustomed
C.addicted
D.stuck
为什么井下电气系统要求有漏电保护装置?