what does “lifebuoy with light and smoke” mean?

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what does “lifebuoy with light and smoke” mean?

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1.X线平均波长(λmean)与最短波长(λmean)的关系是A.λmean=3λminB.λmean=5λminC.λmean=2λminD.λmean=5λminE.λmean=λmin

2.What ________ the notice________?A. is, sayB. is, saidC. did, sayD. does, say

3.x线平均波长(λmean)与最短波长(λmin)的 关系是A.λmean =3λminB.λmean =2.5λminx线平均波长(λmean)与最短波长(λmin)的 关系是A.λmean =3λminB.λmean =2．5λminC.λmean =2λminD.λmean =l．5λminE.λmean=λmin

4.-Does "am"___ afternoon-No, it morning.A. means，meanB. means, meansC. mean, means

更多“what does “lifebuoy with light and smoke” mean? ”相关问题

  • 第1题：

    What _______ “Mr” mean?

    A. is

    B. does

    C. Do


    参考答案：B

  • 第2题：

    X线平均波长（λmean）与最短波长（λmin）的关系，正确的是

    A、λmean=3.5λmin

    B、λmean=3.2λmin

    C、λmean=2.8λmin

    D、λmean=2.5λmin

    E、λmean=2.2λmin


    参考答案：D

  • 第3题：

    Which of the following may illustrate the difference between "competence" and__________ "performance"?

    A．What a person "knows" and what he/she "does".
    B．What a person "can do" and what he/she "does".
    C．What a person "does" and what he/she "knows".
    D．What a person "does" and what he/she "can do".

    答案：A
    解析：
    考查语言学知识。competence“语言能力”，指语言使用者对于语言规则系统的潜在意识；performance“语言运用”，指在具体场景中语言的实际运用，二者对应的分别为“knows”和“does”。故选A。

  • 第4题：

    ________ your mother ________ some cleaning on Sundays?

    A.Does…does

    B.Do…does

    C.Does…do


    参考答案：C

  • 第5题：

    4．—_________ Mike________ his homework in the evening?

    —No，he doesn't．

    A． Do；does

    B． Does；do

    C． Do；do

    D． Does；does


    正确答案：B
    4.B【解析】考查实义动词的疑问式为“Does+主语+do，故选B。

  • 第6题：

    Miller金字塔模型描述临床技能评价方法，从底到顶的四个层次分别为（）

    A．DOES- KNOW HOW- KNOW-SHOW

    B．KNOW-KNOW HOW- SHOW- DOES

    C．KNOW-KNOW HOW- DOES- SHOW

    D．DOES- KNOW- KNOW HOW- SHOW


    A下P204

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