题目内容：
型号为20Sh-19的水泵是（ ）离心泵。
A．单级单吸卧式 B．单级双吸卧式
C．单级单吸立式
D．单级双吸立式
参考答案：
答案解析：
单选题：型号为20Sh-19的水泵是（ ）离心泵。
- 题目分类：水利水电工程
- 题目类型：单选题
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B．单级双吸卧式
C．单级单吸立式
D．单级双吸立式
B．单级双吸卧式
C．单级单吸立式
D．单级双吸立式
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