Which condition is necessary for a substance to burn?（） -题库考试答案搜索网

Which condition is necessary for a substance to burn?（）

单选题

2022-01-03 00:32

A、The temperature of the substance must be equal to or above its fire point
B、The air must contain oxygen in sufficient quantity
C、The mixture of vapors with air must be within the explosive range
D、All of the above

查看答案

正确答案

试题解析

标签：海上搜索

感兴趣题目

Before shutting off the fuel supply to stop a medium or high–speed diesel engine, why is it necessary to allow the engine to idle for a few minutes?（）

Which is heavier, a pound of cotton or half a kilogram of gold?

28． Which is a good place for studying?

（） for the camshaft gear train is taken from a spur gear which for a six cylinder engine is at the coupling end.

Project（71）is an uncertain event or condition that，if it occurs，has a positive or a negative effect on at least one project objective，such as time，cost，scope，or quality．

● Project（71）is an uncertain event or condition that, if it occurs, has a positive or a negative effect on at least one project objective, such as time, cost, scope, or quality.（71）

What is a functional or carriage requirement for compulsory vessels?（）

A mean sun is used as the reference for solar time for three reasons. Which reason is NOT a cause for use of a mean sun?（）

The valve which is most suited for regulating the flow through a pipeline is a （）

（）means the sufficiency of a vessel in materials，construction，equipment，crew，and outfit for the trade or service in which it is employed.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

A mark or place at which a vessel comes under obligatory entry，transit，or escort procedure is know as（）.