The SAI system is used to reduce which exhaust emission?
A) CO B) HC C) NOx D) Both HC and CO
D
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What will be an ideal response?
You treated 550 acres of corn land with an herbicide at the rate of 1.2 quarts per acre. The herbicide is sold in a 2 1/2-gallon container which costs $99.52.
a. How many containers of the herbicide were used? b. What did the herbicide cost?
Glass piping systems are installed for residential DWV applications.
Answer the following statement true (T) or false (F)
Answer the following statement(s) true (T) or false (F)+++++++++++++
1. Auxiliary contacts are intended to control large amounts of current. 2. Motor starters are basically a contactor and overload relay mounted together. Most do not need auxiliary contacts. 3. Hysteresis loss is often referred to as molecular friction. 4. Vacuum contactors enclose their load contacts in a sealed vacuum chamber. 5. The advantage of mercury relays is that each time the relay is used the contact is renewed, eliminating burning and pitting cased by an arc when connection is made or broken.