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【多选题】
当导体带电时A.
导体表面尖端处电荷密度更大
B.
导体内部的电场强度等于零
C.
导体表面的电势高、内部电势低
D.
很难从导体表面移走电荷
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举一反三
【简答题】Java 语言中,定义子类时,使用关键字 _____ 来给出父类名
【单选题】But from the start of their experiments, the Wright brothers found that they needed money to pay ______ their research.
A.
back
B.
down
C.
for
D.
off
【简答题】唾液的作用主要?
【单选题】____________ Monday ____________ Friday, we go to school. [ ]
A.
From, for
B.
From, to
C.
Start, to
【单选题】The( )of logistical work involves all aspects of managing customer requirements from initial order receipt,delivery, invoicing, and collecting.
A.
inventory
B.
transportation
C.
warehousing
D.
order processing
【简答题】Java语言中,定义子类时,使用关键字 来继承父类。
【单选题】People start “counting nine” from _________.
A.
Start of Winter
B.
Winter Solstice
C.
Start of Spring
D.
Spring Festival
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