Most vehicles since the early 1960s have fuel injection systems with computer controls. The computer monitors the oxygen content in the vehicle's exhaust and then adjusts the fuel supply to provide the correct amount of fuel and air for each intake stroke.
Answer the following statement true (T) or false (F)
False
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?The ________ current of the spray mode produces good penetration and fusion, and the ____ current allows the weld pool to cool.
A. ?DCEN, DCEP B. ?DCEP, DCEN C. ?AC DCEP D. ?high, low
When fertilization occurs, one sperm unites with the egg and the other unites with the ____________________ nucleus
Fill in the blank(s) with correct word
If an electrical power tool has a power cord with a three-prong plug and the electrical outlet has two prongs, you should ________
A) cut the third prong (ground lug) off the power cord so that you can use the outlet B) not use this outlet because the power tool needs to be grounded for safe operation, and the two-prong outlet is not grounded. Then locate a GFI or a receptacle that is grounded C) find an adapter that allows you to plug a three-prong plug into a two-prong outlet D) both B and C
Natural-draft furnaces generally have efficiency ratings of _____
a. below 65 percent b. below 78 percent c. below 85 percent d. 90 percent and above