圆柱形外伸管嘴的正常工作条件是(  )。A. H0≥9m,L=(3~4)d

资格题库2022-08-02  41

问题 圆柱形外伸管嘴的正常工作条件是(  )。A. H0≥9m,L=(3~4)d B. H0≤9m,L=(3~4)d C. H0≥9m,L>(3~4)d D. H0≤9m,L<(3~4)d

选项 A. H0≥9m,L=(3~4)d
B. H0≤9m,L=(3~4)d
C. H0≥9m,L>(3~4)d
D. H0≤9m,L<(3~4)d

答案 B

解析 圆柱形外伸嘴管的正常工作条件为:①作用水头H0≤9m;②管嘴长度L=(3~4)d。
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