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42. 滑动轴承中,含油轴承是采用( ) 材料制成的。
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42. 滑动轴承中,含油轴承是采用( ) 材料制成的。
A、硬木
B、粉末冶金
C、塑料
时间：2021-09-01 19:11
关键词：
青书学堂
河北建筑工程学院
机械设计（高起专）
答案解析
B
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boost的意思是:help or encourage to increase or improve
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A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
滑动轴承中,含油轴承是采用 ( ) 材料制成的。
滑动轴承中,含油轴承是采用 ( ) 材料制成的。
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A cabinet or space containing the controls or valves for the fixed firefighting system must be（）.
42. 滑动轴承中,含油轴承是采用( ) 材料制成的。
剖分式滑动轴承的轴承合金损坏后，可采用（）的办法，并经机械加工修复。
（）机械性能较高，多用于制造齿轮、轴承支架、滑动轴承及绝缘物品等。
Mainly east 3 or 4 partly cloudy to overcast occasional rain（）slowly south moderate or good.
（）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.
If he is a common carrier，he is absolutely responsible to the owner of the goods carried （）any loss or damage to them unless caused by an Act of God or the Queen’s enemies，or the inherent vice in the goods themselves，or the negligence of the owner of the goods，or a general average sacrifice.
系统中雷达状态包括Unknown、Operational（or ON）、Failed（or OFF）、Detached。
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