单选题斜盘式液压泵变量机构倾角过小不会造成:()A流量低B执行元件动作慢C工作噪声增大D容积效率太低
单选题
斜盘式液压泵变量机构倾角过小不会造成:()
A
流量低
B
执行元件动作慢
C
工作噪声增大
D
容积效率太低
参考解析
解析:
暂无解析
相关考题:
单选题Oil control rings used in two-stroke/cycle diesel engines are located near the bottom of the piston skirt in order to ()Aincrease the liner area covered by the oil filmBmaintain an oil film on the lower liner where scuffing is prevalentCkeep excess oil away from intake and exhaust portsDhelp cushion piston skirt side thrust by providing a hydrodynamic oil wedge
单选题In the case of the leading marks,the master may()to show these in the bill of lading if the goods or their containers are not clearly marked in such a manner as should ordinarily remain legible until the end of the voyage.AconfuseBexcuseCdefuseDrefuse
单选题Which of the following is false?()AA company should develop a SMS and implement itBA company implementing a SMS properly may obtain a DOCCOnce a company obtains its DOC, each vessel of this company will obtain a SMCDDOC is valid for 60 months unless “major non-conformity” is found
单选题为实现从交流电源到直流稳压电源转换,一般要顺序地经历()。A整流电路、整流变压器、稳压环节、滤波环节B整流变压器、整流电路、稳压环节、滤波环节C整流变压器、整流电路、滤波环节、稳压环节D稳压环节、整流变压器、整流电路、滤波环节
单选题根据《运输船舶消防管理规定》,对下列哪些为将给予处罚?()I、擅离职守、违章作业造成火灾尚不够刑事处罚的;II、过失引起火灾尚未造成损失的;III、故意隐匿灾情或提供假情况的;IV、擅自安装、使用电热器具的AI~IVBII~IVCI~IIIDI、III、IV
单选题在分析和计算电路时,需根据电路中各电流的方向,应用电路的基本定律列出计算关系式,而这些电流恰是需计算之量,这时()。A分析就无法进行下去B电路中有电动势的支路电流,一定与电动势方向一致C可先设定各电流的参考方向进行分析、计算。当计算结果为“+”则假设的参考方向就是该电流的实际方向;反之,则其实际方向与假设的参考方向相反D避开电流先计算其它电量
单选题Crankshafts of medium speed engines are () from a single piece of steel.Aunusually solid weldedBnever be solid forgedCalmost invariably solid forgedDalmost invariably be welded
单选题The furnace of an oil fired boiler should be () before the operating burner is lit.Afilled with waterBpurgedCcleared of airDNone of the above is true
单选题当船舶由热带载重线海区航行至夏季载重线海区时,且热带载重线段油水消耗量大于两载重线对应的排水量之差,则允许使用的总载重量应根据()确定。A夏季载重线B热带载重线C夏季载重线时的总载重量加上热带载重线航段的油水消耗量D热带载重线时的排水量减去夏季载重线航段的油水消耗量
单选题轮机值班所有成员应具有()。 Ⅰ、恰当地使用内部通讯系统的知识和机舱逃生途径的知识; Ⅱ、机舱报警系统的知识,特别是关于辨别各种警报和二氧化碳警报的能力; Ⅲ、有关机舱灭火设备和使用的知识。AⅠ+ⅡBⅠ+ⅢCⅡ+ⅢDⅠ+Ⅱ+Ⅲ