Explain why blades are tapered and twisted
What will be an ideal response?
Taper reduces lift where tip speed is greatest but it does not need to support the weight so the tip can be lighter and thinner. The blade is twisted along the length to keep the angles correct for optimum lift and strength.
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Insulating concrete forms can only be used for _________.
A) exterior load-bearing walls more than 10 in. thick. B) interior or exterior non-load-bearing walls. C) interior load-bearing walls. D) all of the above. E) none of the above.
Section 609 of the Act gives EPA the power to enforce which of the following requirements?
Technicians are required to use both digital and ____________________ (a scale with a movable needle) type meters.
Fill in the blank(s) with the appropriate word(s).