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单选题
A marine chemist issues gas free certificates and is certified by which organization? （）
A
Mine Safety Appliance Association
B
American Chemical Society
C
Marine Chemists Association
D
National Fire Protection Association
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考题
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考题
What best describes for how long a gas-free test is good ________．A.For as long as is indicated on the gas-free certificateB.For the instant that it is madeC.Until valves in line with the tank or compartment are reopenedD.Until changes in temperature or pressure affect the vapor content in the space
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单选题A gas-free certificate would usually be issued by a(n)（）.A
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单选题Said cargo spaces having been cleaned in accordance with the Regulations and the recommendations of the (US) National Cargo Bureau，Inc. This wording is likely to appear in （）.A
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考题
单选题The agency which assigns loadlines and issues Loadline Certificates in US is the （）.A
American Bureau of ShippingB
Secretary of CommerceC
US CustomsD
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考题
单选题A marine chemist issues gas free certificates and is certified by the（）.A
Mine Safety Appliance AssociationB
American Chemical SocietyC
Marine Chemists AssociationD
National Fire Protection Association
考题
单选题The agency which assigns load lines and issues Load Line Certificates is the （）.A
the Bureau of ShippingB
Secretary of CommerceC
the CustomsD
MSA or Coast Guard
考题
单选题Inerting means（）.A
the introduction of inert gas into a tank with the object of reducing the oxygen content to below 8% by volumeB
the introduction of inert gas into a gas free tank for the purpose of reducing the oxygen content to below 8% by volumeC
the introduction of inert gas into a cargo tank during cargo discharge to replace the volume of discharged cargoD
All of the above
考题
单选题A gas-free certificate would usually be issued by a(n)（）.A
CCS marine surveyorB
certified marine chemistC
port engineerD
MSA marine inspector
考题
单选题Open ullage holes in tanks which are not gas-free must be protected by（）.A
PV valvesB
warning signsC
flame screensD
stop-check valves
考题
单选题0pen ullage holes in tanks which are not gas-free must be protected by（）.A
PV valvesB
warning signsC
flame screensD
stop-check valves
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