2050平方厘米=( )平方分米
2.5时=( )时( )分
20.5;2;30
38. Nowhere else in the world______ cheaper tailoring than in Hong Kong.
A.a tourist can find
B.can a tourist find
C.a tourist will find
D.a tourist has found
蒸汽管道上为什么要装补偿器?