<strong id="gxgzs"><listing id="gxgzs"></listing></strong>

單項(xiàng)選擇題

Corrosive liquids and acids should have which kind of label?（）

A.Skull and crossbones
B.Yellow and white
C.Red and white
D.White and black

你可能感興趣的試題

單項(xiàng)選擇題

Conventional anchors are least likely to hold in a bottom consisting of（）.

A.soft clay
B.hard mud
C.very soft mud
D.sand

單項(xiàng)選擇題

Control of fire should be addressed（）.

A.immediately after restoring vital services
B.immediately
C.following control of flooding
D.following establishment of fire boundaries

<strong id="fepgx"><tbody id="fepgx"><thead id="fepgx"></thead></tbody></strong>