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English Translations » 【化工工程交流】 » Basic Process Knowledge (Multiple Choice) 20180711

Basic Process Knowledge (Multiple Choice) 20180711

2018-07-11View Original

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The main reason for filling oil in a rotary oil pump before starting it is . A. Improve self-priming ability B. Reduce noise C. Decrease starting power D. Prevent severe wear caused by dry friction. Hint: Rotary pumps have many friction surfaces and operate at relatively high speeds; even though they can self-priming with a limited suction height, dry friction for short periods is not allowed.
Reply #22018-07-11
D. Prevent severe wear caused by dry friction
Reply #32018-07-11
D. Prevent severe wear caused by dry friction
Reply #42018-07-11
D. Prevent severe wear caused by dry friction
Reply #52018-07-11
D. Prevent severe wear caused by dry friction

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Translated at 2026-07-21 03:58:27

Original: https://bbs.hcbbs.com/thread-2026429-1-1.html

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