2. A - An explosion where the base of the walls of a structure is blown outward.

3. A - A high order concentrated explosion from some material such as dynamite.

4. D - Although you cannot tell what is wrong by looking at the ankle, you should take proper safety precautions and prevent motion of the ankle because of the possibility of a fracture.

5. B - The best course of action is to talk to the firefighter who has been disrespectful to you on a one-on-one basis and let him/her know how you feel about their behavior.

6. B - Go up to your fellow firefighter and ask for an explanation of his behavior. Do not make rash judgments without seeing if there is a reason for the behavior.

7. Answer is D.

4) Knots weaken a rope because the rope is bent in order to form the knot and the outside fibers take most of the strain at the bend.

5) The knot that weakens the rope the least is one requiring the least abrupt bending.

1) The bends that a rope undergoes in the formation of a knot or hitch are of three kinds: the bight, loop, and round turn.

1) The bight is formed by simply bending the rope, keeping the sides parallel; the loop is made by crossing the sides of a bight; the round turn consists of the further bending of one side of a loop.

2) Knots and hitches are formed by combining these elements in different ways so that the tight part of the rope bears on the free end to hold it in place.

8. B - As noted in each building inspection, the boiler room door was left open. The specific reason for choosing B over A is that many of the buildings had violations, and with a careful building owner, these safety violations would not have occurred.

9. C - As stated in the types of alarms and times of occurrences chart, the severe fires were alarms #6, #7, and #8, all of which occurred in the early morning hours.

10. Type B hydrants are broken more in the winter.

11. It takes a crew of 6 firefighters to wash 84 windows at fire headquarters in one day. At the same rate, how many firefighters would it take to wash 140 windows:

x = number of firefighters to wash 140 windows
= 84(x) = 6(140) 84x = 840 x = 10 firefighters (B)

12. A tank on Engine 37 can be filled by one pump in 50 minutes and by another pump in 60 minutes. A third pump can drain the tank in 75 minutes. If all 3 pumps go into operation, how long will it take to fill the tank: