103. When loading or discharging dry mud or cement, crew members should use goggles and ______.
举一反三
- In order to ensure the efficiency and accuracy of information，the crew members’ communication should be：
- We should use quotations when:
- 90. How is the Master or operator of a vessel required to keep the crew informed of the regulations concerning the discharging of garbage overboard? ______.
- You should open the doors when you use it.
- When we press on strings, we should use the______ of the finger.