【单选题】
A <{p}><{font _mstmutation="1" _msthash="20498" _msttexthash="63257688"}>储存液压系统所需的足够油液<{/font}><{br/}><{/p}>
B <{p}><{font _mstmutation="1" _msthash="20499" _msttexthash="30774588"}>散发油液中的热量<{/font}><{br/}><{/p}>
C <{p}><{font _mstmutation="1" _msthash="20500" _msttexthash="142571156"}>沉淀油液的杂质和促进油液中的空气分离消除泡沫<{/font}><{br/}><{/p}>
D <{p}><{font _mstmutation="1" _msthash="20501" _msttexthash="39393822"}>吸收压力冲击和压力脉动<{/font}><{br/}><{/p}>
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