& Write the word TRUE f the statement signifies correct thought and FALSE for the incorrect thought .
1. The automatic voltage regulator can actually maintain constant voltage level.
2. Place the and static mattist on the table before placing the computer unit during repart.
3. Anti-static wrist strap is placed one of our foot in order to avoid static build up to our body
4. Press firmly on the LCD screen to remove the dirt easily, this screen comes with glass protecting
5.If any water drips inside the computer case, allow enough time for the liquid to dry before powerin
6 When compressed air is used to clean Inside the computer, have a distance of four inches from the nozzle
The part retriever, needle-nose pliers, and tweeters can be used to place and retrieve parts on tight areas.
8. Magnetic fields have no adverse effect on magnetic media so nothing to worry about it
9. It is just fine to use hex driver that is too large for the bolt that you are using
10. Do not use flat head screwdriver to remove a Phillips head screw

Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate for the data below. internet speed levels of "fast comma " "medium comma " and "slow" choose the correct answer below. a. the ordinal level of measurement is most appropriate because the data can be ordered comma but differences left parenthesis obtained by subtraction right parenthesis cannot be found or are meaningless. nothing nothing nothing nothing nothing b. the interval level of measurement is most appropriate because the data can be ordered comma differences left parenthesis obtained by subtraction right parenthesis can be found and are meaningful comma and there is no natural starting point. c. the nominal level of measurement is most appropriate because the data cannot be ordered. nothing d. the ratio level of measurement is most appropriate because the data can be ordered comma differences left parenthesis obtained by subtraction right parenthesis can be found and are meaningful comma and there is a natural starting point.

Eye injuries usually occur as a result of all of the following things, except: a) proper machine operation b) battery explosion c) falling or flying debris d) electric welding arc

Suppose there is a relation r(a, b, c) with a b+-tree index with search keys (a, b).1. what is the worst-case cost of finding records satisfying 10 < a < 50 using this index, in terms of the number of records n1, retrieved and the height h of the tree? 2. what is the worst-case cost of finding records satisfying 10 < a < 50 and 5 < b < 10 using this index, in terms of the number of records n2 that satisfy this selection, as well as n1 and h defined above? 3. under what conditions on n1 and n2, would the index be an efficient way of finding records satisfying the condition from part (2)?