Answer:
flapper valves.
Explanation:
According to my research on Aircraft Fuel Tanks, I can say that based on the information provided within the question many fuel tanks incorporate flapper valves. Like mentioned in the question these are implemented to prevent fuel from flowing away from the boost pump or tank outlet. This can happen when the aircraft is experiencing high gravity force/pressure.
I hope this answered your question. If you have any more questions feel free to ask away at Brainly.
Answer:
The correct answer would be option B, Its approval by others.
Explanation:
A proposal is usually a plan or a set of suggestions, which is presented to others. It is usually in the written form. Proposals seek approval by others. Proposals are put forward for considerations by others. A proposal consists of plans and ideas about a certain thing. For example if business wants to open its new line of product, many different proposals can be submitted by the management regarding the launch of new product line. So the success of proposal is best reflected when it is approved by a large number of people.
behavior observation scale
Behavioral observation is a generally utilized arrangement of behavioral evaluation. In comparison to different methods of behavioral evaluation, the people rely on people's perceptions of performance, behavioral observation includes observing and documenting the performance of a person in common circumstances. A behavior observation scale (BOS) is an assessment process which regulates behavior upon levels of achievement and also estimates the frequency with which the responses happen. The devices of BOS are ordinal scale applications which generally rates on a 1-5 or 1-7 scale.
