单选题
发布日期:2021-03-22
keep piston crown temperatures elevated for smoother combustion
reduce the possibility of overheating the top compression ring
help retain the heat of compression to prevent ignition delay
help retain the heat of compression to prevent combustion knock
题王网让考试变得更简单
扫码关注题王,更多免费功能准备上线!
此试题出现在
白塞病的消化道受累可包括()
不使用分道通航制区域的船舶应尽可能远离()。
矿井突水有哪些预兆?
男性,50岁,左膝髌骨骨折内固定术后,卧床第10天活动后突发胸闷气短,伴有胸痛,出冷汗。查体:血压80/60mmHg,呼吸25次/分,心率100次/分,P2>A2,心电图示SⅠQⅢTⅢ、V1~V3T波倒置,动脉血气分析示低氧血症。 假设血浆D-二聚体4.2mg/L,则该患者的治疗包括()
周女士从未进行过证券投资,近期突然想投资于基金进行理财,但是对基金的知识几乎一无所知,为此咨询了理财规划师。封闭式基金也是一种较好的理财工具,理财规划师为其介绍了关于封闭式基金和开放式基金的异同点,说法正确的是()。
患者,女性.24岁,左上颌侧切牙折断,X片显示已做完善根管治疗,叩(-),松(-),断面在龈缘上约2mm,此时应作哪种修复()由于患牙牙体大部缺失,剩余牙体不足以支持固位,因此无法直接行冠修复。患者已经过完善的根管治疗,无临床症状,为满足固位与美观的要求,采用烤瓷桩核冠修复。
下列属性中,用于设置和获取通知的内容的是()。
慢性铁缺乏发展的正确顺序为()
女方在结婚之前有一套房屋,现在准备结婚,可不可以对该房屋属于个人财产的性质进行约定?如果双方进行约定,怎样进行约定?是否可以办理公证?
下列哪项不符合血管的生理作用()。
暂无相关推荐~
Many cast iron pistons are designed with heat dams, which serve to ()
Cast iron pistons used in large propulsion diesel engines are constructed with (...
Many cast iron pistons are designed with heat dams, which serve to ()
Cast iron pistons used in large propulsion diesel engines are constructed with (...
Cast iron carrier rings, () machined grooves, are provided for all the pistons.
Cast iron and gunmetal fittings are used freely in small sizes at moderate press...
"Cast iron has poor corrosion resistance to sea water, especially in the presenc...
Cast iron and gunmetal fittings are used freely in small sizes at moderate press...
"Cast iron has poor corrosion resistance to sea water, especially in the presenc...
Cast iron carrier rings, () machined grooves, are provided for all the pistons.