【判断题】【消耗次数:1】
根据发动机的压缩比选用汽油时,压缩比大,应选用高牌号的汽油。
正确
错误
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相关题目
【判断题】 汽油发动机压缩比越高, 爆燃倾向越强烈, 应选择高牌号的汽油
①  正确
②  错误
【单选题】 发动机功率大,压缩比大,转速高时应选用( )。
①  热型火花塞
②  中型火花塞
③  冷型火花塞
【判断题】 ()某发动机因故造成连杆弯曲而变短,因此该缸的压缩比增大。
①  正确
②  错误
【单选题】 压缩比是指气缸( ) 的比值
①  气缸工作容积与燃烧室容积
②  气缸总容积与燃烧室容积
③  气缸总容积与气缸工作容积
④  燃烧室容积与气缸工作容积
【单选题】 车换用其他汽油牌号时,如由低牌号汽油换用高牌号汽油时,应(? ? )点火提前角。
①  提前
②  推迟
③  不变
④  都可以
【单选题】 往复式压缩机压缩比越高,排出的气体温度越( )。
① 
② 
③  不变
【判断题】 ()柴油发动机的机械效率高于汽油发动机。
①  正确
②  错误
【单选题】 在MPEG中为了提高数据压缩比,采用的方法是?
①  动补偿的运动估计
②  减少时域冗余与空间冗余
③  帧内图像数据与帧间图像数据压缩
④  向前预测与向后预测
【单选题】 MP3数据压缩比可以达到12:1左右( )。
①  正确
②  错误
【单选题】 较高压缩比时,往复式压缩机分段而离心式压缩机一般不分段。( )
①  正确
②  错误
随机题目
【单选题】 The game was fixed for today but it has been____ for a week.
①  transfered
②  delayed
③  translated
④  postponed
【单选题】 Dr. Park was accused ____ the patient with overdose of sleeping pills so that the patient’s life was terminated before the expected time.
①  of providing
②  with providing
③  to have provided
④  to provide
【单选题】 I’ m going to do all I can to____ the unpleasant impression you have of me.
①  move
②  remove
③  shift
④  transform
【单选题】 Ill go out for a walk after supper if it____ rain.
①  didnt
②  wont
③  isnt
④  doesnt
【单选题】 Jean Wagner’s most enduring contribution to the study of Afro-American poetry is his insistence that it ____ in a religious, as well as worldly, frame of reference.
①  is to be analysed
②  has been analysed
③  be analysed
④  should have been analysed
【单选题】 We feel it is high time that the Government ____ something to check the inflation.
①  did
②  do
③  should do
④  would do
【单选题】 She was teaching me ____ you would teach a younger child to speak the language.
①  the way
②  in the way
③  a way
④  to the way
【单选题】 You should have put the milk into the icebox, I expect it ____ undrinkable.
①  became
②  had become
③  has become
④  becomes
【单选题】 The students expected there ____ more reviewing classes before the final exams.
①  is
②  being
③  have been
④  to be
【单选题】 You should have your eyes tested every year in case the ____of your spectacles need changing.
①  lenses
②  glasses
③  sights
④  crystals