______的梯形叫等腰梯形.
两个腰相等的梯形叫等腰梯形叫做等腰梯形.
故答案为:两个腰相等.
湿式振弦除尘器水系统包括导料槽的()和除尘器的用水系统.
She asked me whether()English.
A.was I
B.am I
C.are you
D.I was