單項選擇題Which of the following represents the significance the fuel oil cetane number?（）

A.The cetane number has no affect on injection lag
B.The cetane number is an indication of the fuel’s viscosity
C.Ignition lag is reduced with fuels having a high cetane number
D.The cetane number is of little significance in the combustion


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A.Ignition lag increases
B.Lube oil system pressure increases
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2.單項選擇題Piston cooling fins are located（）

A.atop the piston crown
B.beneath the piston crown
C.at the base of the piston skirt
D.inside the cylinder liner cooling water jacket

3.單項選擇題The ship security assessment is an essential and integral part of the process of developing and updating（）

A.the ship security plan
B.the company security plan
C.the port security plan
D.the national security plan

4.單項選擇題If a vessel moored at a U-Sterminal does not comply with coast guard pollution prevention regulation, it may be detained by the （）

A.Inspector general
B.Captain of the port
C.local port authority
D.state pollution board

5.單項選擇題The temperature of the fuel oil received during bunkering operations is critical in determining the（）

A.expansion space to leave in a tank
B.flash point at which the fuel will burn
C.temperature to which the fuel must be heated
D.rate at which the fuel can be pumped during transfer operations