机械搬运的物质为（）和大部分粘土物质。
参考答案：碎屑物质
As a colleague he's great, but as a friend he's________failure. That's why their friendship ended in
________ruin. [ ]
A. /; /
B. /; a
C. a; a
D. a; /
载波聚合技术中，成员载波ComponentCarrier支持的带宽可以是（）
A.1.4M
B.5M
C.20M
D.40M
