Pretreatment of boiler feedwater __________________
A. consists of heating, softening and reverse osmosis treatment, and is done to limit the amount of chemicals necessary
B. consists of chemical treatment and is used to raise the Ph of the feedwater
C. consists of chemical treatment and is used to lower the Ph of the feedwater
D. is only used on large boilers operating for a power utility
A
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The three methods of testing welded butt joints are (1) the nick-break test, (2) the guided-bend test, and (3) the free-bend test.
Answer the following statement true (T) or false (F)
When any product containing hydrogen and/or carbon reacts with oxygen to release heat energy, the process is called ____________________.
Fill in the blank(s) with the appropriate word(s).
Two dice are rolled. Let X = 1 if the dice come up doubles and let X = 0 otherwise. Let Y = 1 if the sum is 6, and let Y = 0 otherwise. Let Z = 1 if the dice come up both doubles and with a sum of 6 (that is, double 3), and let Z = 0 otherwise.
a. Let 
denote the success probability for X. Find .
b. Let 
denote the success probability for Y. Find .
c. Let 
denote the success probability for Z. Find .
d. Are X and Y independent?
e. Does 
f. Does Z = XY? Explain.
The range of a 10-bit binary counter is 0 to 9
Indicate whether the statement is true or false