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单级单吸离心泵的转子部分由叶轮，轴和（）等组成。
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单级单吸离心泵的转子部分由叶轮，轴和（）等组成。
A、滚动轴承
B、填料
C、轴套
D、密封环
时间：2022-01-05 08:54
关键词：
机修基础知识
机动车维修技术
大学试题
工学
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C
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boost的意思是:help or encourage to increase or improve
eloquent的意思是:fluent or persuasive in speaking or writing
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
单级单吸式离心泵的主要零件有（ ）、泵轴、泵座、叶轮、填料盒、减漏环、联轴器、轴承座（ ）等九部分（至少答出六部分）
Mainly east 3 or 4 partly cloudy to overcast occasional rain（）slowly south moderate or good.
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（）any case or suspected case of quarantinable disease，or any case of eruptive disease or any death be discovered，the local quarantine officer must be notified immediately．
Should any case or suspected case of quarantinable disease，or any case of eruptive disease or any death be discovered，the local Quarantine Officer must be（）immediately.
Masters are（）solely responsible for all damages or accidents of whatever kind resulting from the navigating or handling of their vessels by day or by night.
系统中雷达状态包括Unknown、Operational（or ON）、Failed（or OFF）、Detached。
Owners are to be responsible for loss of or damage to the goods or delay in delivery of the goods only in case the loss，damage or delay has been caused by the improper or negligent stowage of the goods．This means that（）.
The carrier is liable for loss of or damage to the goods or delay in delivery caused by fire，（）the claimant proves that the fire arose from fault or neglect on the part of the carrier，his servants or agents.
单级单吸离心泵的转子部分由叶轮，轴和（）等组成。
Shutdown price（or point，or rule） 停业价格（或停业点、停业原则）
翻译：With Average or With Particular Average（WA or WPA）（）
单级单吸式离心泵所受轴向力有使叶轮指向吸入口方向的力。( )
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