Which of the following is NOT a procedure to prevent flammable/combustible liquids from igniting?
A. Provide ventilation.
B. Exclude carbon dioxide.
C. Exclude any ignition sources.
D. Store liquids in sealed containers.
B
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Lead azide is a primary explosive that is
a. a commercial explosive whose proper chemical name is N-methyl-N-2,4,6-tetra-nitroaniline. b. the active component of the commercial explosive substance whose proper chemical name is pentaerythritol tetranitrate. c. the primary explosive mercury(II) cyanate, a substance whose chemical formula is Hg(CNO)2. d. a unique commercial explosive in that it is the only one whose chemical composition does not include oxygen.
Number 1 in the figure is the ________ muscle.
What type of bone is the patella?
a. flat b. irregular c. long d. sesamoid
A closed soft-tissue injury characterized by swelling and ecchymosis is called a(n):
A. abrasion. B. crush injury. C. contusion. D. hematoma.