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Tonnage openings must be closed by means of ______．
A.Press board
B.Steel hatch boards
C.Steel plates
D.Wooden hatch boards
参考答案
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单选题A flashing green light displayed at a single lock means that the lock is（）.A
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单选题A well in the uppermost deck of a shelter deck vessel which has only a temporary means of closing for the purpose of gaining an exemption from tonnage measurement is called a（n）（）.A
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单选题The Tonnage Certificate gives the（）of a ship which is classified into gross tonnage and net tonnage.A
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单选题Tonnage openings must be closed by means of（）.A
Press boardB
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单选题装卸货之前，打开舱盖。（）A
After loading and discharging, hatch covers will be opened.B
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单选题In your multitenant container database (CDB) with two pluggable database (PDBs). You want to create a new PDB by using SQL Developer. Which statement is true?（）A
The CDB must be open.B
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单选题An International Tonnage Certificate will be issued to a vessel when it meets several requirements，one of which is that the vessel must （）.A
admeasure over 100 GTB
be 79 or more feet in lengthC
engage in intercoastal or international tradeD
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单选题A tonnage tax is levied according to the（）.A
deadweight cargo tonnage aboardB
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多选题On what conditions may an exemption certificate，exempting from the requirement to install a fixed fire extinguishing system in a cargo space，be issued？（）AThe ship is constructed and solely intended for carriage of ore， coal， grain， unseasoned timber， non-combustible cargoes or cargoes which according to the Administration constitute a low fire riskBSteel hatch covers and effective means of closing all ventilators and other openings to the cargo space are fittedCA fixed deck foam system is be fitted in lieu of the cargo space extinguishing systemDThe vessel is less than 10 000 gross tonnage
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