A.機(jī)械能轉(zhuǎn)化為液壓能 B.液壓能轉(zhuǎn)化為機(jī)械能 C.位能轉(zhuǎn)化為液壓能
A.軟巖 B.中硬巖 C.硬巖
A.0.5-1 B.1-1.5 C.1.5-2 D.2-2.5