A.應(yīng) B.不應(yīng) C.視情況
A.3 B.1 C.2
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