47. Long tunnels have connecting tunnels: (A) for broken down vehicles (B) for emergency use (C) for vehicles to make a U-turn.

48. If fire occurs ahead of your vehicle in a long tunnel, how can you evacuate and, at the same time, avoid heavy smoke and the high temperature, thereby minimizing any injury: (A) keep your body low and evacuate in the opposite direction that your vehicle was moving (B) keep your body low and evacuate in the direction that your vehicle was moving (C) evacuate in the direction your vehicle was moving as quickly as possible.

47. Long tunnels have connecting tunnels: (A) for broken down vehicles (B) for emergency use (C) for vehicles to make a U-turn.

其他試題

47. Long tunnels have connecting tunnels:
(A) for broken down vehicles
(B) for emergency use
(C) for vehicles to make a U-turn.