更多"Safe welding practice requires （）"的相关试题:
[单项选择]When anchoring，good practice requires 5 to 7 fathoms of chain for each fathom of depth. In deep water you should use（）.
A. the same ratio
B. more chain for each fathom of depth
C. less chain for each fathom of depth
D. two anchors with the same ratio of chain
[单项选择]Fire prevention during welding or burning aboard any vessel should include （）.
A. posting a fire watch in the immediate area
B. providing an extinguisher which is ready for immediate use
C. requiring the fire watch to remain on post for 30 minutes after the completion of welding or burning
D. All of the above
[单项选择]Before welding in a tank that has carried petroleum products，the tank must be certified by （）.
A. the Coast Guard
B. the ABS
C. the shipyard fire department
D. a certified marine chemist
[单项选择]When welding or burning aboard a vessel, you must be certain that the space （）.
A. is properly vented
B. contains no explosive fumes
C. has no oil in the bilges
D. all of the above
[单项选择]If emergency welding repairs must be made to the upper area of a fuel tank, the tank and/or adjacent compartments may need to be （）
A. gas freed
B. inerted
C. filled with water
D. all of the above as necessary
[单项选择]Before welding is permitted on a fuel tank, it must be certified or declared （）
A. safe for becoming rounded
B. safe for hot work
C. not safe for personnel
D. not safe for hot work
[单项选择]Before welding can be done in a tank that has carried petroleum products，a certificate must be obtained from（）.
A. the Customs
B. the Register Bureau of Shipping
C. the Shipyard Fire Department
D. a certified gas chemist
[单项选择]The AMVER system requires（）.
A. Sailing plans to be sent before departure
B. More frequent reports in heavy weather
C. Arrival reports to be sent within 8 hours of arrival
D. A position report within 24 hours of departure
[单项选择]An engine compartment gasoline fire requires which type of extinguisher?（）
A. Carbon dioxide
B. Dry chemical
C. Foam
D. All of the above
[单项选择]视觉2020行动制定的防治沙眼的策略是“SAFE”。SAFE的意思是（）
A. 由于沙眼是衣原体感染所致，因此进行沙眼防治时应注意患者的安全
B. 由于沙眼是衣原体感染所致，因此进行沙眼防治时应注意医师的安全
C. 手术、抗生素治疗、清洁睑部和改善环境
D. 治疗沙眼引起的倒睫时应注意安全
E. 治疗沙眼需应用抗生素，应注意用药安全
[单项选择]Prior to burning or welding on a fuel tank on a ship，regulations require that an inspection be made. An entry in the unofficial logbook is required if this inspection is made by（）.
A. a marine chemist
B. the Officer in Charge，Marine Inspection
C. the Master or person in charge of the ship
D. the National Fire Protection Association
[多项选择]The network security policy requires that only one host be permitted to attach dynamically to each switch interface. If that policy is violated, the interface should shut down. Which two commands must the network administrator configure on the 2950 Catalyst switch to meet this policy (Choose two.)（）。
A. Switch1(config-if)# switchport port-security maximum 1
B. Switch1(config)# mac-address-table secure
C. Switch1(config)# access-list 10 permit ip host
D. Switch1(config-if)# switchport port-security violation shutdown
E. Switch1(config-if)# ip access-group 10
