To ensure the safety in operating hatch covers, oil the moving parts （）.
第1题：
If your passenger vessel is fitted with a loudspeaker system，it must be tested at least once ______.
A.every week
B.a day
C.every trip
D.a watch or once a trip，whichever is shorter
第2题：
Each life jacket light that has a non-replaceable power source must be replaced ______．
A.every 6 months after initial installation
B.every 12 months after initial installation
C.every 24 months after initial installation
D.on or before the expiration date of the power source
第3题：
A.monthly
B._Monthly3_
C.monTHly
D.3monthly
第4题：
救生艇下水每隔三个月进行一次。（）
第5题：
第6题：
What is the period of validity of the SOLAS required Cargo Ship Safety Construction Certificate?
A.12 months
B.24 months
C.48 months
D.60 months
第7题：
第8题：
______ of the following need NOT be entered in the Official Logbook？ _______.
A.The testing of the internal combustion engine driven emergency generators at least once each month the vessel is navigated
B.The testing of storage batteries for emergency lighting and power systems once each 6 months the vessel is navigated．
C.The actual draft when the vessel arrives in salt water after departing a port
D.The testing of the line-throwing appliance once every 3 months
第9题：
Wire ropes should be greased （）.
第10题：
Which of the following is an environmental server maintenance task that should be performed every three months?（）