【单选题】Proper lubrication of the main bearings is more easily obtained in a single acting, four-stroke/cycle diesel engine than in a tow-stroke/cycle diesel engine because________.
A.
The direction of pressure on the journal in four-stroke engine is continuously
B.
positive feed lubricators are installed on all bearings of four-stroke engine, whereas as a splash feed system is used on tow-stroke engine
C.
four-stroke engines usually utilize a heavier grade of oil than tow-stroke engines
D.
Low-stroke engines usually consume less lube oil than four-stroke engines
【判断题】哈特曼使用“结构的中性化”概念来实现自我离开本我,赋予自我自主性。所谓能量中性化是把本能的能量改变成非本能模式的过程。()
【判断题】《建设工程质量管理条例》规定,建设单位必须向有关的勘察、设计、施工、工程监理等单位提供与建设工程有关的原始资料,并且必须真实、准确、齐全。( )
【判断题】避强定位策略能使证券公司较快地在市场上站稳脚跟,并能在证券客户心目中树立形象,风险小。
【判断题】在个体品德的生成和生长过程中,自我教育的活动是比不可少的,所谓的自我教育活动就意味着封闭性,即它是纯粹的“内在活动”,并不伴有开放性。()
【单选题】《建设工程质量管理条例》规定,施工单位必须建立、健全( )制度,严格工序管理,做好隐蔽工程的质量检查和记录。
【单选题】使用水银柱式血压计测量血压的过程中从听诊器中听到第一声搏动时,袖带内压力