Centrifugal pumps, however, can be designed with a number of impellers （） to attain a large amount of liquid.<br>A:in series<br>B:in parallel<br>C:assembled<br>D:together

Centrifugal pumps, however, can be designed with a number of impellers （） to attain a large amount of liquid.
A:in series
B:in parallel
C:assembled
D:together

出自：海船船员证

提示：
同一【IP】的非会员用户每天可免费获取10次答案

收藏本站【zk.995w.com】，下次访问不迷路

本站试题总数:【10252937】个 (题库试题定时更新)