He walks _____slowly_____get there on time.
A. so...that
B. such...that
C. too...to
D. too...that
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The player was given hardly any opportunities to ____________(show up/show off)his talents.
Don't ask me to do it. I've got _______(enough/such) problems as it is.
自感为0.25 H的线圈中,当电流在0.1 s内由2 A均匀减小到零的过程中,线圈中自感电动势的大小为
A. 0.20 V
B. 0.25 V
C. 20 V
D. 5.0 V
两个平面圆线圈相距不远,如果要使其互感系数最小,则应调整线圈的取向使
A. 两线圈平面都平行于两圆心连线
B. 两线圈平面都垂直于两圆心连线
C. 一个线圈平面在两圆心连线上,另一个线圈平面垂直于两圆心连线
D. 两线圈中电流方向相反