<form id="qvha7"><th id="qvha7"></th></form>

<th id="qvha7"><em id="qvha7"></em></th>

<th id="qvha7"></th>

單項選擇題

Which fire fighting agent has the greatest capacity for absorbing heat?（）

A.water
B.dry chemical
C.foam
D.CO₂

你可能感興趣的試題

單項選擇題

Which types of portable extinguisher should you watch for the reflash of the fire?（）

A.foam and water
B.CO₂ and dry chemical
C.dry chemical and water
D.foam and CO₂

單項選擇題

A portable foam fire extinguisher is placed in operation by（）

A.turning it upside down
B.pressing the foam lever
C.squeezing the grip handle
D.opening the hose valve