What safety device is used to prevent the waterway master stream from separating from the ladder and becoming a projectile that could strike and injure a fire fighter or other person?
A. Interlock pin
B. Coupling pin
C. Automatic pin
D. Manual pin
Answer: D. Manual pin
Health Professions
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Widening of the cervical os is known as ____________________.
Fill in the blank(s) with the appropriate word(s).
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Isotopes have ____ mass numbers and ____ atomic numbers
a. the same; the same b. the same; different c. different; the same d. different; different
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