- A.eysglasses
- B.a hat
- C.a safety helmet
- A.cycle
- B.expansion
- C.scavenging
- A.Temperature
- B.viscosity
- C.pressure
- A.atmosphere
- B.the fresh water
- C.compressed air
- A.use
- B.trouble
- C.cause
- A.turning gear
- B.steering gear
- C.chain gear
- A.fresh water pump
- B.sea water pump
- C.fresh water generator
- A.one revolution
- B.two revolutions
- C.four revolutions
- A.do
- B.was
- C.am
- A.renewed
- B.examined
- C.covered