单选题In any right triangle, the acute angles are ______.A EqualB Adjacent anglesC Vertical anglesD Complementary anglesE Supplementary angles

题目
单选题
In any right triangle, the acute angles are ______.
A

Equal

B

Adjacent angles

C

Vertical angles

D

Complementary angles

E

Supplementary angles

相似考题

1.The globe valve has a bulbous body, housing a valve seat and screw down plug or disc arranged at right angles to the axis of the pipeAccording to the above sentence, which of the following statements is not true?A.The profile of the valve is like a globeB.The valve seat is set into the bulbous bodyC.The plug or disc of the valve is made vertical to the axis of the pipeD.The valve seat is located at right side of the plug or disc

2.“AMIDSHIPS ” refers to______.A.Back of the vesselB.The middle portion of a shipC.A backward movement of a vesselD.Across the ship, at right angles to the fore-and-aft centerline

3.A mooring line leading at nearly right angles to the keel is a ______.A.spring lineB.bow lineC.stern lineD.breast line

4.Cross curves of stability show which of the following？A.The righting arms at various angles of inclination and displacementB.The metacentric height at large angles of heelC.The height of the center of buoyancy at various anglesD.The metacentric radius at various displacements

更多“单选题In any right triangle, the acute angles are ______.A EqualB Adjacent anglesC Vertical anglesD Complementary anglesE Supplementary angles”相关问题

  • 第1题：

    When using horizontal sextant angles of three objects to fix your position，an indeterminate position will result in which situation ________．

    A.The objects lie in a straight line

    B.The vessel is inside of a triangle formed by the objects

    C.The vessel is outside of a triangle formed by the objects

    D.A circle will pass through your position and the three objects


    正确答案：D

  • 第2题：

    GM cannot be used as an indicator of stability at all angles of inclination because ______.

    A.M is not fixed at large angles

    B.there is no M at large angles

    C.G is not fixed at large angles

    D.there is no G at large angles


    正确答案：A
    GM值不能用于表示船舶所有倾斜角的稳性因为在大的横倾角时M点不是固定点。

  • 第3题：

    （）leads at right angles to the center line from the stern to the shore.

    • A、An aft breast line.
    • B、An aft spring
    • C、The stern line
    • D、A fore breast line

    正确答案:A

  • 第4题：

    单选题
    The line leading at right angles to the （）(中线) from the forecastle to the shore is called the forward breast line.
    A

    draft

    B

    waterline

    C

    centerline

    D

    abeam


    正确答案： C
    解析： 暂无解析

  • 第5题：

    单选题
    Which of the files listed is tapered on three sides and is used to file acute internal angles?（）
    A

    Mill

    B

    Round

    C

    Square

    D

    Triangular


    正确答案： B
    解析： 暂无解析

  • 第6题：

    单选题
    When using horizontal sextant angles of three objects to fix your position，an indeterminate position will result in which situation（）.
    A

    The objects lie in a straight line

    B

    The vessel is inside of a triangle formed by the objects

    C

    The vessel is outside of a triangle formed by the objects

    D

    A circle will pass through your position and the three objects


    正确答案： D
    解析： 暂无解析

  • 第7题：

    单选题
    The globe valve has a bulbous body, housing a valve seat and screw down plug or disc arranged at right angles to the axis of the pipeAccording to the above sentence, which of the following statements is not true?（）
    A

    The profile of the valve is like a globe

    B

    The valve seat is set into the bulbous body

    C

    The plug or disc of the valve is made vertical to the axis of the pipe

    D

    The valve seat is located at right side of the plug or disc


    正确答案： D
    解析： 暂无解析

  • 第8题：

    单选题
    （）is used for measuring horizontal and vertical angles.
    A

    The marine sextant

    B

    Thechronometer

    C

    The magnetic compass

    D

    The gyrocompass


    正确答案： D
    解析： 暂无解析

  • 第9题：

    单选题
    In any right triangle, the acute angles are ______.
    A

    Equal

    B

    Adjacent angles

    C

    Vertical angles

    D

    Complementary angles

    E

    Supplementary angles


    正确答案： D
    解析：
    Since the right angle measures 90 degrees, the sum of the two acute angles must be 180-90=90 degrees.

  • 第10题：

    单选题
    If a line at right angles to the axis rotates about that axis and, at the same time, moves parallel to the axis, it will generate （）.
    A

    a helix

    B

    a helicoidal

    C

    a curve

    D

    a cone


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    The vertical distance between G and M is used as a measure of（）.
    A

    stability at all angles of inclination

    B

    initial stability

    C

    stability at angles less than the limit of positive stability

    D

    stability at angles less than the downflooding angle


    正确答案： B
    解析： 暂无解析

  • 第12题：

    单选题
    A structure，usually made of stone，or cement pilings，which extends from the bank at approximately right angles to the current is called a（）.
    A

    dike

    B

    revetment

    C

    cutoff

    D

    crib


    正确答案： D
    解析： 暂无解析

  • 第13题：

    At all angles of inclination, the metacenter is ______.

    A.vertically above the center of buoyancy

    B.vertically above the center of gravity

    C.at the intersection of the upright vertical centerline and the line of action of the buoyant force

    D.at the geometric center of the underwater volume


    正确答案：A
    在所有的倾斜角中，横稳心在浮心的垂直上方。

  • 第14题：

    If the vertical center of gravity (VCG) of a ship rises 1.7 feet, the righting arm (GZ) for the various angles of inclination will ______.

    A.decrease

    B.increase

    C.remain unchanged

    D.be changed by the amount of GG’ x cosine of the angle


    正确答案：A
    假如船舶的垂直重心高度（VCG）上升1.7英尺，回复力矩（GZ）在不同的倾斜角时将减少。

  • 第15题：

    The line leading at right angles to the （）(中线) from the forecastle to the shore is called the forward breast line.

    • A、draft
    • B、waterline
    • C、centerline
    • D、abeam

    正确答案:C

  • 第16题：

    单选题
    The largest waves (heaviest chop) will usually develop where the wind blows（）.
    A

    at right angles to the flow of the current

    B

    against the flow of the current

    C

    in the same direction as the flow of the current

    D

    over slack water


    正确答案： A
    解析： 暂无解析

  • 第17题：

    单选题
    Which one of the following is a counterexample to the statement “If two angles are supplementary, then they are right angles?”
    A

    If two angles are complementary, then they are not right angles.

    B

    If two angles are fight angles, then they are supplementary.

    C

    If two angles are not supplementary, then they are not right angles.

    D

    If two angles are supplementary, then one could measure 100° and one could measure 80°.

    E

    If two angles are not fight angles, then they are not supplementary.


    正确答案： E
    解析：
    A counterexample is an example that proves a statement to be false. Answer D shows one example where angles are supplementary but are not right angles, since one measures 100° and the other measures 80°.

  • 第18题：

    单选题
    If the vertical center of gravity (VCG) of a ship rises 1.7 feet，the righting arm (GZ) for the various angles of inclination will（）.
    A

    decrease

    B

    increase

    C

    remain unchanged

    D

    be changed by the amount of GG' x cosine of the angle


    正确答案： D
    解析： 暂无解析

  • 第19题：

    单选题
    Flexible hose under pressure in a hydraulic system will （）.
    A

    tend to twist about its long axis

    B

    expand in length and in diameter

    C

    contract in length and expand in diameter

    D

    flex at right angles to the applied pressure


    正确答案： C
    解析： 暂无解析

  • 第20题：

    单选题
    At all angles of inclination，the metacenter is（）.
    A

    vertically above the center of buoyancy

    B

    vertically above the center of gravity

    C

    at the intersection of the upright vertical centerline and the line of action of the buoyant force

    D

    at the geometric center of the underwater volume


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    “AMIDSHIPS” refers to （）.
    A

    back of the vessel

    B

    the middle portion of a ship

    C

    a backward movement of a vessel

    D

    across the ship, at right angles to the fore-and-aft centerline


    正确答案： B
    解析： 暂无解析

  • 第22题：

    单选题
    A mooring line leading at nearly right angles to the keel is a（）.
    A

    bow line

    B

    breast line

    C

    spring line

    D

    stern line


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    If the measures of the angles of a triangle are in the ratio of 2：3：4, what is the measure of the smallest angle of the triangle?
    A

    20

    B

    25

    C

    30

    D

    40

    E

    45


    正确答案： E
    解析：
    Let 2x, 3x, and 4x represent the measures of the three angles. 2x+3x+4x=180, x=20. Hence 2x=40.

  • 第24题：

    单选题
    The three interior angles of a triangle have measures of a°, a°, and b°. If b = 80, what is the value of a?
    A

    30

    B

    40

    C

    50

    D

    60

    E

    100


    正确答案： C
    解析：
    因为三角形内角之和为180度，因此可得出a + a + b = 180，已知b=80，那么2a+80=180，a=50。

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