题目内容 (请给出正确答案)
提问人:网友13***556 发布时间:2022年3月22日 08:32
[单项选择题]

油田上使用的内燃机润滑油主要有汽油机油和()。

A.汽车机油

B.柴油机油

C.蜗轮蜗杆油

D.发动机油

参考答案
十点题库官方参考答案 (由十点题库聘请的专业题库老师提供的解答)
更多“油田上使用的内燃机润滑油主要有汽油机油和()。”相关的问题
Servicing manufactured goodsTake it back, son LOS ANGELES On June 8th the Supreme Court ordered Eastman Kodak to stand trial in a competition case about the repair of expensive photocopiers. It has thrown a spotlight on the in- creasingly hostile relationship in America between manufacturing companies and the firms that service and repair the goods which the manufacturers produce. If firms chose to use an indepen- dent service company, it is alleged, Kodak refused to supply either the servicing firm or the customer with spare parts. In effect, Kodak was trying to get customers to agree not to employ any firms that competed with it for service contracts on the Kodak machines. Many economists would side with Kodak, rather than the court. They argue that consumers take servicing costs into account when buying equipment, so restrictive service agreements are not neces- sarily anti-competitive as long as there is competition in the equip- ment market itself. The market for servicing high- technology electronic products alone is worth roughly $100 billion a year. Thousands of independent contrac- tors compete for the business, but the lion’s share goes to equipment manufacturers. Roughly a quarter of the revenues of America’s computer makers comes from servicing and maintain- ing the machines they sell. Profit margins on service contracts can be as high as 50%. That comes in handy when profit margins on the sale of computers are disappearing because of recurring price wars. Other industries may also be affected. Detroit’s car makers also backed Kodak. In 1990 the retail market for car parts was worth $150 billion, about the same as that for new cars. Servicing cars came to another $100 billion on top of that. Detroit used to be happy to leave the repair business to morn-and-pop garages. No longer. Many indepen- dent distributors of spare parts complain that the big car makers are muscling in on their business. Big manufacturers in Japan and Germany service nearly all their own products. But America’s high job mo- bility and entrepreneurial traditions have encouraged many engineers in high-tech industries to set up service firms of their own, often to the fury of their former employers. Not all manufacturers are keen on the repair and service business. Makers of cheaper electronic goods, such as washing machines, tele- visions and video-recorders, find it cheaper and easier to replace faulty machines with new ones, or encour- age customers to buy a new model, than to bother with spare parts. But many states in America require that manufacturers honour warranties on anything they sell. To satisfy the law they have appointed dealers and service agents. And yet because the manufacturers of electronic goods now view many of their products as disposable, they are in direct conflict with the dealers who have to provide service under those warranties. Decide whether these statements are true (√) or false (×), according to the article.
点击查看答案
时间可调化营销的要素包括()
A、调整服务时间
B、建立预定系统
C、高峰时间告示
D、采用灵活的用工制度
E、全天候营销
点击查看答案
杜甫《秋兴八首》:丛菊两开他日泪,____
点击查看答案
下列关于国际收支的说法中,不正确的是()。A.国际收支是指一国居民在一定时期内与非本国居民在政治
A.国际收支是指一国居民在一定时期内与非本国居民在政治、经济、军事、文化及其他往来中所产生的全部交易的系统记录。这里的“居民”是指具有本国国籍的自然人B.国际收支包括经常项目和资本项目C.经常项目是最具综合性的对外贸易的指标D.在国际收支的衡量指标中,贸易收支是国际收支中最主要的部分

B.国际收支包括经常项目和资本项目C.经常项目是最具综合性的对外贸易的指标D.在国际收支的衡量指标中,贸易收支是国际收支中最主要的部分

C.经常项目是最具综合性的对外贸易的指标D.在国际收支的衡量指标中,贸易收支是国际收支中最主要的部分

D.在国际收支的衡量指标中,贸易收支是国际收支中最主要的部分
点击查看答案
根据《架空输电线路无人机巡检作业技术导则》,中型旋翼无人机空机质量为()
A.7kg 及以下
B.7kg~116kg
C.20kg~200kg
D.200kg 及以上
点击查看答案
易爷爷,87岁,眼睛痒、痛,结膜发红,医生诊断为结膜炎,嘱红霉素眼膏涂眼。该药物的最佳应用时间为()。
A.每天下午使用B.每天早上使用C.每晚睡前使用D.每天中午使用
点击查看答案
下列属于功能性日常生活能力评估项目的是
A.吃饭
B.做饭
C.穿衣
D.下棋
点击查看答案
根据ISM规则的要求,结合本船的类型、航线、挂港、货物情况等,制定相应的应急反应程序,主要包括__。①船舶火灾应急反应程序;②船舶爆炸应急反应程序;③船舶碰撞应急反应程序;④船舶破损进水应急反应程序;⑤船舶严重倾斜应急反应程序()
A.①~③
B.①~④
C.①~⑤
D.②、⑤
点击查看答案
铂金与钯金的延展性较差。()
点击查看答案
青春期功血大出血使用大剂量雌激素止血后,雌激素减量的原则:()
A.止血后每天减1,2量至维持量
B.止血后每天减1/3量至维持量
C.止血后每2天减l/3量至维持量
D.止血后每2天减l,2量至维持量
E.止血后每3天减l/3量至维持量
点击查看答案
与气生成相关的两脏是()
A.肝与脾
B.心与脾
c.心与肺
D.脾与肺
E.肝与肺
点击查看答案
借款人可直接向中国农业银行提出个贷业务申请,也可以通过经中国农业银行授权的房地产开发商提出住房贷款业务申请。
点击查看答案
客服
TOP