Answer:
I couldn't find options for your question online, but I can give you an explanation so you can choose the correct option.
Explanation:
A spark knock is a form of unpredictable behavior that occurs in combustion, that is, in the chemical reaction that occurs between oxygen and an oxidizable material. Such combustion is usually manifested by incandescence or flame.
The spark knock is a detonation that occurs when there is a lot of pressure in the fuel.
Some situations in which this can happen are:
Engine overloaded. Maximum pressure in the cylinders. Engine overheated. Overheated air. Long and excessive engine ignition timing. Spark plug at high temperatures.Science, Technology, Engineering & Mathematics
Professionals in these careers strive to enhance the quality of life through innovations in technology, health sciences or information, the environment, and _________.
A. communication systems
B. needs of the people
A communication systems
Why is the flushing cycle important for flake ice machines?
A.
Flake ice machines have greater concentrations of scale buildup as compared to cube ice machines.
B.
Flake ice machines have an exposed preparation chamber that can easily attract dust and other contaminants.
C.
Flake ice machine shavers can quickly pick up off-flavors.
D.
Flake ice machines must defrost periodically to work adequately.
A
Explanation:
Flake ice machines will have greater concentrations of scale buildup as compared to cube ice machines. Since solids collect near the bottom of the auger, a complete draining and flush ofthe system is required.
What historical event allowed both aerospace fields to make enormous strides forward?
Answer:
The world wars. Especially world War II
Explanation:
The world wars were the single most notable events that led to the leap in development of the aircraft from a simple apparatus capable of flight to a sophisticated flight machine. Airplane production was at its maximum during these periods (especially world war II) and has never seen that capacity of production again since. Countries focused on research that could add even the slightest enhancements to their aircraft in order to for it to surpass that of other countries.
please help!!
what group of people created the first form of rockets
1.greeks
2.Chinese
3.Americans
4.Russians
Answer:
I think that the answer is the Chinese
Explanation: