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【简答题】
柱坐标下的平衡微分方程、几何方程和直角坐标的形式是()的。
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参考答案:
举一反三
【单选题】Having noticed that she was followed by someone, she stopped and looked at the shop window, _____ to be enjoying the beautiful clothes. [     ]
A.
preventing
B.
pretending
C.
permitting
D.
persuading
【简答题】A.She walked to a flying saucer. B.She followed the animal to a plane. C.She was carried to a spaceship. D.She left the car to go toward the spaceship.
【简答题】The doctor convinced her that she could ______ her baby ______ if she followed his instructions.
【简答题】She kept looking behind to see if she was being followed A her    B.herself    C.her own    D.she
【单选题】由于组合旅游团游客分住在不同饭店,因此,在接待他们出发旅游之前,导游员要同司机商定()。
A.
接待地点
B.
接运线路
C.
接运方式
D.
接待方法
【单选题】由于组合旅游团游客分住在不同饭店,因此,在接待他们出发旅游之前,导游要同司机商定 ( )
A.
接待地点
B.
接运线路
C.
接运方式
D.
接待方法
【单选题】由于组合旅游团游客分住在不同饭店,因此,在接待他们出发旅游之前.导游要
A.
机商定( )。
B.
接待地点
C.
接运线路
D.
接运方式
E.
接待方法
【单选题】--- Where is your mother? --- She _______ to Sichuan on business. She has ______ there four times recently.
A.
has gone; gone
B.
has been; been
C.
has gone; been
D.
has been; gone
【简答题】无限长单位冲激响应(IIR)滤波器的基本结构有直接Ⅰ型,直接Ⅱ型,()和()四种。
【简答题】无限长单位冲激响应( IIR )滤波器的基本结构有直接型,级联型和 ____________ 三种。
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