油品调合的方法有哪几种?
参考答案:
压缩空气调合,泵循环调合,机械搅拌调合和管道调合
(假设信息)如果病人大便色黑,查潜血阳性,进一步检查首选
A.大便培养
B.上消化道造影
C.胃肠B超
D.肠镜检查
E.胃镜检查
The way he did it was different _____ we were used to. [ ]
A. in which
B. in what
C. from what
D. from which