你可能感興趣的試題

A.8m；8.5m
B.8.5m；8.5m
C.8m；8m
D.8.5m；8m

A.13m；13m
B.13.5m；13m
C.13m；13.5m
D.13.5m；13.5m

A.11m；11m
B.11.5m；11m
C.11m；11.5m
D.11.5m；11.5m

A.7m；6.5m
B.7.5m；6m
C.7.5m；6.5m
D.7m；6m

A.6m；5.5m
B.6m；5m
C.6.5m；5m
D.6.5m；5.5m

A.5m；4m
B.5m；5m
C.4m；4m
D.6m；5m

A.4m；2m
B.2m；4m
C.4m；3m
D.5m；4m

A.3m；1.5m
B.2m；1.5m
C.3m；2m
D.3m；2.5m

A.安全網(wǎng)
B.圍欄
C.安全標(biāo)示牌
D.圍欄和安全標(biāo)示牌

A.機(jī)械傷害
B.噴漿傷害
C.破碎傷害
D.藥劑傷害