When making up screwed valve connections, _____ threads should be showing outside the valve.
a. two
b. three
c. four
d. five
b. three
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To avoid costly damage to lumber and plywood, they must be _____.
a. ordered in small quantities b. properly stored and handled c. stored off-site d. kept in a locked building
Define drift.
What will be an ideal response?
Which of the following keeps the flame from entering the hoses and regulator?
a. Oxygen shutoff valve b. Acetylene shutoff valve c. Flame suppressor d. Flashback arrestor
The subsequent problems deal with the following PIC circuit and PicBasic code. Assume PORTB.2 is 0 to begin with.
I Var BYTE : J Var BYTEI = 1myloop:I = I + 1If (I > 2) Then loop2Low PORTB.2High PORTB.2Pause 100High PORTB.2Goto mylooploop2:J = 2 * (I/6+1)What is the value of I after the code runs (i.e., after the last line)?
A. 0 B. 1 C. 2 D. 3 E. 4