A.[0,0.5] B.[0,1] C.[-0.5,0.5] D.[-0.5,1]
A.≤10mm B.≤15mm C.≤20mm D.≤12mm
A.測(cè)二分之一墻面 B.測(cè)30個(gè)點(diǎn) C.測(cè)25個(gè)點(diǎn) D.墻面全測(cè)