What is an elevator?
A、Anelevatorisusedtograbbulkcoalforloadingandunloading.;
B、Anelevatorisusedtoloadorunloadofbulkgrain.;
C、Anelevatorisusedtotransporttheliquidcargo;
D、Anelevatorisusedtohandlecargoesinboxesandpackets.
发布时间：2025-08-18 04:06:21
