Name two source documents for keying insurance data.

For a 1-A rating, the extinguisher should extinguish about ____ cubic foot of wood cribbing.

A. 0.5 B. 1 C. 1.5 D. 2

B lymphocytes that produce antibodies that will attract scavenger cells to ________ enemy antigens.

A. filter B. digest C. unleash D. host