The four basic components of a fire are fuel, heat, oxygen and a chain reactionWhich of the following statements best describes what must be eliminated to extinguish a fire?（）

[单选题]关于图纸设计变更标注正确的是：（）

[判断题]位于俄罗斯联邦圣彼得堡的艾尔米塔什博物馆是世界四大博物馆之一。(    )

[多选题]全光网络主要由（）组成。

[单选题]造成晚期癌症患者苦恼的最主要原因是（　）

[问答题]论述影响蛋白质水溶性的因素，并举例说明蛋白质的水溶性在食品加工中的重要性。

[判断题]我国班氏丝虫病的传播媒介只有淡色库蚊和致倦库蚊。

[填空题]（）对教师自身的发展与提高起保证和推动作用，使教师保持良好的从业心态。

[单选题]培训课程开发的依据是（）。

[单选题]评定柴油机经济性的指标是（）。

[单选题]牙周刮治后可能会造成牙髓的反应性改变，通过的主要途径是（　　）。

[单选题]The four basic components of a fire are fuel, heat, oxygen and a chain reactionW...

[单选题]The four basic components of a fire are chain reaction, heat, fuel, and （）.

[单选题]The four basic components of a fire are fuel, heat, oxygen and a chain reactionW...

[单选题]The four basic components of a fire are chain reaction, heat, fuel, and （）.

[单选题]The basic training in fire prevention and fire fighting should include the pract...

[单选题]The basic training in fire prevention and fire fighting should include the theor...

[单选题]The basic training in fire prevention and fire fighting should include the pract...

[单选题]The basic training in fire prevention and fire fighting should include the theor...

[单选题]The three basic elements necessary for any fire are （）.

[单选题]The three basic elements necessary for any fire are （）.