56 My present position is about ________ 17 25 N ________ 34 121
(E)
(A)north, east
(B)longitude, latitude
(C)latitude, longitude
(D)east, north

52 Always remember that fire is the greatest ________ aboard a ship. (A)hustle (B)hazard (C)hiss (D)husk

53 We suspect that your ship is involved in illegal activities. Please stop the vessel for security ________. (A)inspection (B)instruction (C)interaction (D)intersection

54 Please prepare ________ from the ship. The rescue team will be there within two hours. (A)accommodation (B)accusation (C)evaluation (D)evacuation

55 _________! This is ship 766 from Panama. We are suffering collision. Please notify authorities for assistance. (A)Mayday (B)Absolutely (C)Request (D)Understand

57 This is an American merchant ship anchored two ________ miles outside the harbor. (A)naval (B)sea-going (C)coastal (D)nautical

58 Please prepare all your identifications and go to the front deck for ________. (A)roll call (B)rule plan (C)rubric control (D)role play

59 Which of the following is not part of the standard procedure when ordered to abandon a boat? (A)Entering lifeboat (B)Informing coast radio stations (C)Raise alarm (D)Conduct diving survey

60 Which of the following should be executed when crew overboard happens? (A)Raise the alarm and conduct the search. (B)Report the weather situation. (C)Brief on safety regulations. (D)Speed up the pumping rate.

1. A jet plane in straight horizontal flight passes over your head. When the plane is directly above you, the sound seems to come from a point behind the plane in a direction 45° from the vertical. The speed of the sound is vs. The speed of the plane is about: (A) vs (B) 0.5vj (C) 0.7 Ivj (D) 1.41vj (E) 2vs.

2. A horizontal force of 10 N pushes a 0.5-kg block against a vertical wall. The book is initially at rest. If the static coefficient of friction (μs) is 0.6 and the kinetic coefficient of friction  (μk) is 0.4, which of the following is true? (A) The frictional force is 4.9 N (B) The frictional force is 6.0 N (C) The frictional force is 4.0 N (D) The normal force is 4.9 N (E) The normal force is 10.9 N.