往复式压缩机reciprocating compressor：（）

A、优点merit: 排出压力稳定，能够适应广泛的压力变化范围和较宽的流量调节范围，一般效率较高，对制造压缩机的金属材料要求不苛刻。Stable discharge pressure, can adapt to a wide range of pressure changes and a wide range of flow regulation, generally higher efficiency, the manufacture of compressor metal material requirements are not harsh.

B、缺点disadvantage： 结构复杂，易损件多，安装及基础工作量也较大，运转中的振动和噪音也大。The structure is complex, the wearing parts are many, the installation and the foundation work load is also big, the vibration and the noise in the operation is also big.

C、往复式活塞压缩机一般适用于要求升压较高而输气量不大的场合。Reciprocating piston compressor is generally suitable for the occasion of high booster pressure and small gas flow.

D、以上都不对