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【简答题】
This was a difficult task, since there was no ( ).
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举一反三
【单选题】Living in a big city has many _____, such as good schools, libraries and convenient traffic.
A.
goodness
B.
advantages
C.
effects
D.
uses
【单选题】When many people discuss schools 'good or bad', what are they talking about?
A.
Financial costs.
B.
Locations of schools.
C.
Their personal belief systems.
D.
Information gathered through research.
【单选题】为真空中两个平行的“无限大”均匀带电平面,已知两平面间的电场强度大小为E 0 ,两平面外侧电场强度大小都为E 0 /3,方向如图.则A,B两平面上的电荷面密度分别为
A.
=0 ; =0
B.
=-4ε 0 E 0 /3 ; =2ε 0 E 0 /3
C.
=2ε 0 E 0 /3 ; =2ε 0 E 0 /3
D.
=-2ε 0 E 0 /3 ; =4ε 0 E 0 /3
【单选题】气象灾害预警信号根据气象灾害可能造成的危害程度、紧急程度和发展态势一般划分为四级,其中特别严重的等级用____色表示。(出题单位:中国气象局)
A.
蓝
B.
黄
C.
橙
D.
红
【简答题】( )调唱名法, 又被称作是“移动着的Do”。 大调音阶的首音唱do,小调音阶的首音唱la。
【单选题】Living in the city has many ____ such as good schools, big shopping centers and so on.
A.
advantages
B.
activities
C.
difficulties
D.
communications
【单选题】两电阻 R1=40 Ω , R2=60 Ω则串联和并联后的总电阻分别为 ( )
A.
100 Ω， 50 Ω
B.
50 Ω， 100 Ω
C.
100 Ω， 24 Ω
D.
24 Ω， 100 Ω
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