碎屑颗粒的分选性是指颗粒大小的均匀程度,按主要粒度的()可将分选性划分为好、中、差三等。
A.大小
B.均匀程度
C.粗细
D.含量
参考答案:D
The chairman asked me to ______ the report, because he didn't want to speak for too long at this
meeting. [ ]
A. cut out
B. cut away
C. cut off
D. cut down
在Linux操作系统中,用于逐屏显示文件内容的命令是______。
A.type
B.cp
C.dir
D.more