单选题叶轮两侧盖板都设密封环的离心泵不包括()离心泵。A双吸式B带平衡孔的C带平衡管的D带平衡盘的

单选题
叶轮两侧盖板都设密封环的离心泵不包括()离心泵。
A

双吸式

B

带平衡孔的

C

带平衡管的

D

带平衡盘的


参考解析

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