问题
选择题
Do you think a person____is cleverer than one____?[ ]
A. with debt; without debt
B. under debt; up debt
C. in debt; out of debt
D. on debt; over debt
答案
答案：C
搜题请搜索小程序“爱下问搜题”
Do you think a person____is cleverer than one____?[ ]
A. with debt; without debt
B. under debt; up debt
C. in debt; out of debt
D. on debt; over debt
答案：C
时（T为交流的周期），原线圈中的电流瞬时值为0.03A．变压器的原、副线圈的匝数比为（ ）
：3