A、用2m直尺和塞尺連續(xù)量?jī)沙?,取較大值 B、用3m直尺和塞尺連續(xù)量?jī)沙撸≥^大值 C、用3m直尺和塞尺連續(xù)量?jī)沙撸∑骄?br /> D、用2m直尺和塞尺連續(xù)量三尺,取較大值
A.5B.10C.20D.30