在煤样缩制过程中,煤样粒度与最小保留量之间的关系是,粒度小于3mm,最小保留量()。
A.7.5kg
B.3.75kg
C.1.5kg
D.0.7kg
参考答案:D
Mrs. S with preterm labor will be under Terbutaline (Brethine) therapy. Before beginning the therapy, which of the following assessments would be most important
A. Estimated fetal size.B. Maternal heart rate.C. Contraction intensity.D. Deep tendon reflexes.
常规航空摄影的航向重叠度应为()
A.30%~50%
B.60%~65%
C.70%~80%
D.100%