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【简答题】
滴定管的读数误差为 ± 0.02 ml , 如果滴定时消耗滴定液 2.50 ml ,相对误差是多少?如果消耗 25.00 ml ,相对误差又是多少?这些数值说明了 测量值越( ),准确度越高
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【单选题】Let's go out in the back yard and ______ the bottle with water and see if you can discover a way to carry it without dropping it.
A.
full
B.
fill
C.
filled
D.
fulled
【判断题】When pouring,the waiter should touch the bottle with the glass,in case no drops are out of the bottle.
A.
正确
B.
错误
【简答题】In Ms. Hudson’s class, the bottle and balloon setup is a closed system because the balloon on the bottle fills with air from ____________ the bottle.
【简答题】The bottle with the words" DRINK ME" , which Alice very soon finished, made her____(smaller or bigger?).
【单选题】Children, hold the bottle with your right hand. Tommy, you are not correct. Please use your ________ hand. [ ]
A.
other
B.
the other
C.
another
D.
the another
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