Radar is not only to obtain ______, but also to measure their distance away from you.A.brightness of objectsB.color of targetsC.shape of targetsD.bearing of objects

题目

Radar is not only to obtain ______, but also to measure their distance away from you.

A.brightness of objects

B.color of targets

C.shape of targets

D.bearing of objects

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1.Now she is free ________ the control of her parents.(A) out(B) away(C) from(D) off

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4.Dick was a sailor on a big ship. It went to Japan and Australia, __21__ Dick was often on the ship for several months at a time. When he woke up in the morning and looked out, he only saw the sea, __22__ sometimes a port.When he was twenty-four, Dick __23__ and bought a small house with a garden in his wife's town. It was far away fromthe sea. Then he had to go back to his ship, and he __24__ home for two months. He went from the port to the town by bus, and was very happy to see his wife again.The next morning he slept until 9 o'clock. Then he woke up suddenly and looked out of the window. There were trees a few feet __25__. He was very frightened and jumped out ofbed, shouting, "We've hit land!"21.A.orB.did not comeC.soD.got marriedE.away22.A.orB.did not comeC.soD.got marriedE.away23.A.orB.did not comeC.soD.got marriedE.away24.A.orB.did not comeC.soD.got marriedE.away25.A.orB.did not comeC.soD.got marriedE.away

参考答案和解析
正确答案：D
雷达不仅获得物标的方位，而且可以测量它们离你的距离。
更多“Radar is not only to obtain ______, but also to measure their distance away from you.A.bri ”相关问题

  • 第1题：

    [A] acquire

    [B] achieve

    [C] obtain

    [D] fulfill


    正确答案：B
    34. B 
    “学业上取得成就”用 achieve。[A] acquire 和[C] obtain 作“获得”解时，作及物动词，后及宾语。[D]fulfill vt. 实践，实行，完成，达到，侧重“履行”之意。

  • 第2题：

    His clients often defer payment for as long as possible.

    A:make
    B:demand
    C:postpone
    D:obtain

    答案：C
    解析：
    本题考查的是对动词的认知。这句话的意思是：他的客户经常尽可能地推迟支付时间。defer的意思是推迟，例如：We wish to defer our decision until next week．我们希望推迟到下星期再作出决定。A.make做；B.demand要求；C.postpone推迟，例如：It won't hurt to postpone the matter for a few days．此事耽搁几天无碍；D.obtain获得。defer和postpone意思最接近，所以选C。

  • 第3题：

    有效的措施 an ______________ measure


    采取有效措施

  • 第4题：

    Customers often defer payment for as long as possible.

    A:make
    B:demand
    C:postpone
    D:obtain

    答案：C
    解析：

  • 第5题：

    Distance（)表示距离


    B

  • 第6题：

    15、实平面上任意一点到原点的距离函数可以定义为 distance :: Float -> Float -> Float distance x y = ... distance x y 表示坐标点（x,y)到原点（0, 0)的距离。请判断下面哪些表达式是类型错误的。

    A．distance (1,2)

    B．distance (1+2)

    C．distance (1+2) 5

    D．distance (1+2) (2+3)


    (1)设曲线L上过点P(xy)的切线方程为Y—y＝y'(X－x)令X＝0得该切线在y轴上的截距为y－xy'．由题设有 此为一阶齐次微分方程令 将此方程转化为 两边积分并代入 。由于L经过点 于是L的方程为 。(2)设第一象限内曲线 在点P(xy)处的切线方程为 它与x轴及y轴的交点分别为 。于是所求面积为 令 S'(x)＝0得 容易验证 是函数S(x)在 内的极小值点且是唯一的极小值点即为最小值点．于是所求切线为 。 [分析](1)先求出切线方程及其在y轴上的截距，由题设可得到与待求曲线对应的函数所满足的微分方程．(2)由面积最小，可得曲线上的切点，从而求出对应的切线方程．[评注]本题是一道综合题，主要考查由实际问题建立微分方程的能力、微分方程的求解、导数与定积分的几何应用以及求函数的极值．求曲线在任意点P(x，y)处的切线方程时，由于任意点已用x和y表示，因此切线上任意点的坐标设为(X，Y)，以示区别．这是求解这类问题的一种习惯做法，应引起注意．

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