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【单选题】
在计算机网络拓扑结构中,目前不常用的拓扑结构是A.
总线型
B.
星形
C.
环形
D.
网状
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反馈参考答案：
举一反三
【简答题】( 1 )两点的左,右相对位置右 x 坐标确定, x 坐标大者在 。 ( 2 )两点的前,后相对位置由 y 坐标确定, y 坐标大者在 。 ( 3 )两点的上,下相对位置由 z 坐标确定, z 坐标大者在 。
【简答题】I am grateful to him for that advice, _____ I own all my success.
【简答题】点(x,y,z)关于x 轴的对称点坐标为( ). 2. 点(x,y,z)关于xoy平面的对称点坐标为( ). 3.点(x,y,z)关于原点的对称点坐标为( ). 4. 点 M ( 4 , –3 , 5 )与原点的距离为 ( ) .
【判断题】Poe turned out the earliest American detective fiction and science fiction.
A.
正确
B.
错误
【单选题】I am grateful to him for that advice,______I owe all my success.
A.
which
B.
that
C.
to which
D.
by which
【单选题】已知点P（-1，3，-4），且该点在三个坐标平面yoz平面，zox平面，xoy平面上的射影的坐标依次为（x 1 ，y 1 ，z 1 ），（x 2 ，y 2 ，z 2 ）和（x 3 ，y 3 ，z 3 ），则（ ）
A.
x 2 2 +y 3 2 +z 1 2 =0
B.
x 1 2 +y 2 2 +z 3 2 =0
C.
x 3 2 +y 1 2 +z 2 2 =0
D.
以上结论都不对
【判断题】Poe turned out the earliest American detective fiction and science fiction.
A.
正确
B.
错误
【单选题】3 在三面投影图中,如果点的 X坐标为零时,点在W面上;如果点的X、Z坐标为零时,点在( )上;如果点的三个坐标均为零时,点在( )。1X轴2Y轴3Z轴4坐标原点上。正确答案是
A.
①④
B.
②④
C.
③④
D.
④③
【单选题】I am grateful to him for letting me read his early chapters in ____.
A.
prescription
B.
depcription
C.
manuscript
D.
nondescript
【单选题】A thorough search of Edgar Allan Poe s correspondence has turned up not a single letter in which he mentions his reputed addiction. On the basis of this evidence it is safe to say that Foes r...
A.
Reports claiming that Poe was addicted to did not begin to circulate until after his death.
B.
None of the reports of Poe's supposed addiction can be traced to individuals who actually knew Poe.
C.
Poe's income from writing would not have been sufficient to support a addiction.
D.
Poe would have been unable to carry on an extensive correspondence while under the influence of .
E.
Fear of the consequences would not have pred Poe from indicating in his correspondence that he was addicted to .
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