保费收入中留在当年的部分属于当年的收入,称之为()。
A. 已赚保费
B. 未赚保费
C. 短期负债
D. 短期资产
The ecological environment would be if we continue to enlarge deforested areas.
A. face off
B. worse off
C. made off
D. cut off
E. frozen off
火山角砾的粒度为()
A. >64mm
B. 64~2mm
C. 0.0625~2mm
D. <0.0625mm<br>
粗粉砂岩中主要碎屑颗粒粒径为()
A. 0.005~0.03 mm
B. 0.003~0.005 mm
C. 0.03~0.05mm
D. 0.005~0.05mm