After a week,he_______ good ideas to solve the problems.
A:caught up with
B: came up with
C:ended up with
D:followed up with
如图所示是家庭电子式电能表的表盘,其示数是____ kW·h,表盘上标有“3200imp/kW·h”,表示每消耗1kW·h的电能,指示灯闪烁了3200次,若家庭电路只有一台电热水器在工作,该电能表的指示灯在4min内闪烁了320次,则该热水的实际功率是____ W.
下列不是艾滋病传染途径的是( )