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【简答题】
填空。 （1） +97= +65 （2）245+198+55= + +198 （3）364+73-64=72+（ -64） （4）428-53-47=428-（ + ）
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反馈参考答案：
举一反三
【判断题】F. A. Q. means the quality of the product offered is equal to the average quality of the current group , recent shipment, etc.
A.
正确
B.
错误
【简答题】辨析“伐、侵、袭、征”词义的异同
【单选题】When the current flow through a copper wire increases, its _____。
A.
resistance will decrease
B.
insulation will bum
C.
temperature will increase
D.
conductivity will increase
【简答题】Pohutukawa, is also called New Zealand's _______ tree.
【单选题】称取“4.6g”是指称取量可为( )
A.
4.595~4.605g
B.
4.596~4.604g
C.
4.56~4.64g
D.
4.60~4.64g
E.
4.55~4.65g
【单选题】When reverse-biased,an ideal ()would block all current .Areal one lets perhaps 10 microamperes through-not a lot ,but still not perfect.
A.
forward
B.
switch
C.
resistor
D.
diode
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