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【简答题】
烟粉虱常见的生物型主要有B型 、Q型 。目前，国内分布最广、为害最严重的是（）。
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皮皮学刷刷变学霸
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【单选题】Seeing the happy _____ of children playing in the park, I’m full of joy and confidence in the future of our country.
A.
sight
B.
scene
C.
view
D.
sign
【简答题】A．Children are willing to accept the real violence in society. B．Children will become more and more kind. C．Children will not accept the violence in society. D．Children think they are just imaginary.
【简答题】Children who are over-protected by their parents maybecome _____. A. hurt B. spoiled C.damaged D. harmed
【单选题】已知刀具沿一直线方向加工的起点坐标为(X20,Z-10),终点坐标为(X10,Z20),则其程序是( )。
A.
G01 X20 Z-10 F100
B.
G01 X-10 Z20 F100
C.
G01 X10 W30 F100
D.
G01 U30 W-10 F100
【单选题】For the root of B_tree of order m,the minimal number of its children is
A.
2
B.
[m/2]
C.
[m/2]
D.
m
【单选题】通过测量区的液柱断裂成一连串均匀液滴的原因是在( )
A.
在流动室上加上了频率为 30kHz 的信号
B.
在测量区上加上了频率为 30kHz 的信号
C.
在压电晶体上加上了频率为 30kHz 的信号
D.
在光电倍增管上加上了频率为 30kHz 的信号
【简答题】A．Children are willing to accept the real violence in society. B．Children will become more and more kind. C．Children will not accept the violence in society. D．Children think they are just imaginary.
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