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【简答题】
Exercise Rewrite the following by putting the short sentences into compound or complex sentences, or sentences with participial, prepositional, or other phrases: 1. Xu comes from a working-class family. He enrolled in college last fall. 2. The dean issued a bulletin. It said the library would remain open on weekends. 3. Last night was a wild night. The thunder roared. The wind blew a gale. The rain fell in torrents. 4. There are icicles on the trees. The temperature must have fallen considerably during the night. 5. He returned to his hometown. He had been away for twelve years. He looked in vain for the familiar landmarks. 6. We have made some progress. We still have a long way to go. 7. The sky was cloudless. The sun was shining brightly. 8. There were over two hundred passengers on board the plane. About one third of them were foreigners. 9. The girl began to learn to play the piano when she was a child. Her mother was a famous pianist. 10. She appeared on the stage. A stormy applause broke forth.
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【单选题】扭矩的方向规定是( )
A.
右手螺旋法则,大拇指指向截面为正
B.
右手螺旋法则,大拇指背离截面为正
【简答题】Rory Taylor refers to competitors as ______, __________or, more informally, ______.
【单选题】已知A点的坐标为(5,5,5),则A点在
A.
空间
B.
V面上
C.
X轴上
D.
原点
【简答题】已知AB在x轴上,A点的坐标为(3,0),并且AB=5,则B的坐标为
【单选题】在词组 “very old” 中,应插入哪一半元音使元音对元音发生连读?
A.
/j/
B.
/w/
C.
/ ə /
D.
/ ə r/
【单选题】扭矩方向的判定方法是
A.
利用右手螺旋法则,四指表示扭矩方向,拇指指向离开截面时扭矩为正,反之为负
B.
利用右手螺旋法则,四指表示扭矩方向,拇指指向截面时扭矩为正,离开截面时为负
C.
利用左手螺旋法则,四指表示扭矩方向,拇指指向离开截面时扭矩为正,反之为负
D.
利用左手螺旋法则,四指表示扭矩方向,拇指指向截面时扭矩为正,离开截面时为负
【简答题】扭矩的方向如何确定?
【简答题】如图,在平面直角坐标系中,已知一圆弧过正方形网格的格点A、B、C已知A点的坐标为(-3,5),则该圆弧所在圆的圆心坐标为(    )。
【单选题】2-5.平移坐标轴,将坐标原点移至 ,已知点A在新坐标系 中的坐标为(3,2),则A点在原坐标系 中的坐标为 ( )
A.
(-4,0)
B.
(4,0)
C.
(2,4)
D.
(4,2 )
【单选题】扭矩的方向判断用()
A.
左右手螺旋定则
B.
右手螺旋定则
C.
左手螺旋定则
D.
二力平衡公理
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