why do you need to take the lube oil sample for analysis ? in the analyzing , what can you possibly find ?and if you find these substances ,what are the possible problems the engines may have ?why ?

题目

why do you need to take the lube oil sample for analysis ? in the analyzing , what can you possibly find ?and if you find these substances ,what are the possible problems the engines may have ?why ?

相似考题

1.You look(). What () you () ?A、tire, did…doB、tiring, have…doneC、tired, do…doD、tired, have…been doing

2.May I take this book out of the reading room? No,you . You read it in here. ( )A. mightn’tB. won’tC. need’tD. mustn’t

3.9． _______you _______ stay at home today?A． Do ; have toB． Must; have toC． Have; toD． Do ; must

4.Your little girl is becoming very rude. You ________ scold her.A.mayB.canC.ought toD.need

参考答案和解析
正确答案：At least ,every three months ..by analyzing the samples of the lube oil ,I can find such things as metal dust ,viscosity ,and other impurities ,this is preventive measures in engine maintenance ..for example ,if I find metal (aluminum ,copper etc )inside the lube oil ,maybe something wrong with the engine and part of the engine is broken .
更多“why do you need to take the lube oil sample for analysis ? in the analyzin ”相关问题

  • 第1题：

    you， do， eraser， how， spell【连词成句）

    ________________________？


    正确答案：
    54. How do you spell eraser 

  • 第2题：

    What () you () at eight o'clock tomorrow morning?

    A、are; doing

    B、do; you

    C、will; do

    D、will; be doing


    参考答案：D

  • 第3题：

    The stages within the development phase of the software life cycle are ( 71 ).

    A.design, analysis, implementation, and testing

    B.analysis, design, implementation, and testing

    C.analysis, design, testing, and implementation

    D.design, analysis, testing, and implementation


    正确答案：C

  • 第4题：

    —Where____you____lunch?

    —Athome．Therewasnoschoollunch

    A．did；have

    B．are；having

    C．will；have

    D．do；have


    正确答案：A

  • 第5题：

    以下程序的输出结果是()。main(){char*a[][5]={“how”,”do”,”you”,”do”,”!”};char**p;inti;p=a;for(i=0;i<4;i＋＋);printf(“%s”,p[i]);}()

    A.howdoyoudo!

    B.how

    C.howdoyoudo

    D.hdyd


    正确答案:C

  • 第6题：

    You look（） What（）you（）?

    Atire；did；do

    Btiring；have；done

    Ctired；do；do

    Dtired；have；been doing


    D
    略

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