问题
选择题
He _______ his umbrella to me yesterday, so I didn't get wet. [ ]
A. borrowed
B. lent
C. kept
D. bought
答案
答案：B
搜题请搜索小程序“爱下问搜题”
He _______ his umbrella to me yesterday, so I didn't get wet. [ ]
A. borrowed
B. lent
C. kept
D. bought
答案：B
，内阻不计。理想变压器的输出端并联24只彩色小灯泡，每只灯炮均标有“6V，0.25W”，灯泡都正常发光，导线电阻不计.问: