下列不是黑变病的诱发因素的是()
A.遗传
B.接触沥青
C.化妆品
D.营养不良
E.内分泌紊乱
参考答案:A
I don't know if it _______ tomorrow. If it _______, we'll go out for a picnic. [ ]
A. will rain; won't rain
B. rains; doesn't rain
C. will rain; doesn't rain
技术支撑体系中的检测检验主要包括检测检验资质类别、( )、项目及检测检验人资格等。