未知题型
因为6a=13b, 所以a:b=13:6;a:13=b:6. 故答案为:13,6,b,6.
÷6=13……2验算正确的算式是[ ]6×13B.6×13 +2C.13×6-280 ÷6=13……2验算正确...
单项选择题÷6=13……2验算正确的算式是[ ]6×13B.6×13 +2C.13×6-280 ÷6=13……2验算正确的算式是 [ ]6×13 B.6×13 +2 C.13×6-2
=9×______13÷57=13×______1÷78=______×______67÷9=______×_...
未知题型=9×______13÷57=13×______1÷78=______×______67÷9=______×______.9÷ 2 3 =9×______ 1 3 ÷ 5 7 = 1 3 ×______ 1÷ 7 8 =______×______ 6 7 ÷9=______×______.
降压变压器的特点有A.I1B.KC.u1>U2D.N1>N2
多项选择题降压变压器的特点有