题干
You can be ______ success, but you don't need to be ______ Bill Gates to be successful.
A：a; a
B：the; /
C：the; the
D：/; the
答案(点此获取答案解析）
A
You can be ______ success, but you don't need to be ______ Bill Gates to be successful.
A：a; a
B：the; /
C：the; the
D：/; the
时，原线圈的电流i=30mA，由此可知，此变压器的原副线圈的匝数之比为