The most common weld defect caused by surface contamination is _____
a. scale
b. porosity
c. brittleness
d. layering
b
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Generally, the actions of hormones
A) tend to be less widespread than actions of the nervous system. B) can produce complex changes in physical structure and physiological changes. C) are faster to react than the nervous system. D) are shorter-lasting than the actions of the nervous system. E) do not affect homeostasis.
The tongue of lizards may be fleshy or forked like a snake's tongue
A. True B. False
A rodgauge provides an inferred measurement for level.
Answer the following statement true (T) or false (F)
Given the circuit of Figure P10.10, determine the current IR. Let RB = 30 k?, RC1 = 1 k?, RC2 = 3 k?, R = 7 k?, VBB1 = 4 V, VBB2 = 3 V, VCC = 10 V, ?1 = 40, and ?2 = 60.
Known quantities:
Figure P10.10, assuming 
Find:
IR