问题
选择题
When shopping you must keep it in mind that don't let yourself be________ into buying things
you don't want.[ ]
A. expressed
B. organized
C. persuaded
D. preferred
答案
答案：C
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When shopping you must keep it in mind that don't let yourself be________ into buying things
you don't want.[ ]
A. expressed
B. organized
C. persuaded
D. preferred
答案：C
m/s的水平初速度从两板间正中央射入，如图所示，取
m/s2．
Ｖ时，微粒恰好不发生偏转，求微粒的电量和电性．
的取值范围？