我国刑法规定的量刑制度包括（）。

In order to discharge a CO2 portable fire extinguisher, the operator must FIRST ______.

A.invert the CO2 extinguisher

B.squeeze the two trigger handles together

C.remove the locking pin

D.open the discharge valve

A.foam and water

B.CO2 and dry chemical

C.dry chemical and water

D.foam and CO2

A portable dry chemical fire extinguisher discharges by ______.

A.gravity when the extinguisher is turned upside down

B.pressure from a small CO2 cartridge on the extinguisher

C.air pressure from the hand pump attached to the extinguisher

D.pressure from the reaction when water is mixed with the chemical

How do you operate a portable CO2 fire extinguisher？______.

A.Point the horn down

B.Turn cylinder upside-down

C.Break the rupture disc

D.Pull pin, squeeze grip

A.release the CO2 flooding system

B.open the door to evaluate the extent of the fire

C.enter and use a portable extinguisher

D.secure the ventilation

A.Fixed CO2, semi-portable CO2, then hand portable CO2

B.Semi-portable CO2, fixed CO2, then hand portable CO2

C.Hand portable, semi-portable CO2, then as a last resort the fixed CO2 system

D.Hand portable, fixed CO2, then as a last resort the semi-portable CO2

A foam-type portable fire extinguisher is most useful in fighting a fire in ______.

A.generators

B.oil drums

C.the bridge controls

D.combustible metals

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

A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in ______.

A.generators

B.oil drums

C.the bridge controls

D.combustible metals