When preparing pipe joints for welding by applying tack welds, any spacer used to set the root opening
should be removed _____.
a. after the first tack has been made
b. after the third tack has been made
c. after the fourth and final tack has been made
d. just before the root pass has been completed
a
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When a diesel engine is operating at its best efficiency, how much of the potential heat energy of the fuel is converted into usable energy at the flywheel?
A. 30 % B. 40 % C. 70 % D. 80 %
Si la circunferencia de la tuberÃa es de 20 pulgadas, la longitud apropiada para cortar el revestimiento es de ____ pulgadas (cm).
a. 22 a 23 (55,88 a 58,42) b. 21 a 22 (53,34 a 55,88) c. 23 a 24 (58,42 a 60,96) d. 23-1/2 a 24-1/2 (59,69 a 62,23)
What are the reasons for wearing latex gloves when handling an amphibian?
What will be an ideal response?
Match each item with a statement below.
A. logical negation operator B. matches exactly one character, except for the backslash and period C. environment variable that contains the file name containing commands to initialize the shell D. environment variable that holds the primary shell prompt E. environment variable that identifies the path name for user's home directory F. environment variable that holds the path name of the program for the type of shell you are using G. environment variable that holds the list of path names for directories searched for executable commands H. bitwise negation operator I. environment variable that contains the absolute path to the Bash shell, such as /bin/bash