在制品管理的工作内容包括（）。

A.合理确定在制品管理任务和组织分工

B.合理存放和妥善保管在制品

C.建立、健全在制品的收、发与领用制度

D.在制品的库存管理

E.认真确定在制品定额，加强在制品控制，做好统计与核查工作

Fire in an engine compartment is best extinguished with carbon dioxide gas (CO₂) and by（）.

A.completely closing the compartment

B.closing the compartment except for the ventilators

C.leaving the compartment open to the air

D.increasing the air flow to the compartment by blowers