更多"Worm geared automatic mooring winch"的相关试题:
[单项选择]The majority of automatic mooring winches are spur geared to improve the backward efficiency of the gear train for rendering（）
A. spur geared
B. screw geared
C. worm geared
D. belt driven
[单项选择]In an automatic mooring winches, the wire is paid off the barrel at（） a tension and is recovered at（）tension.
A. lower；igher
B. maximum；higher
C. predetermined minimum；higher
D. predetermined maximum；lower
[单项选择]The spur geared mooring winches have advantages over worm geared ones in（）
A. higher efficiency of the gear train while reversing
B. the higher gear ratio
C. the multi-start feature
D. higher recovering speed
[单项选择]Electric cargo winches have an overload safety device which normally cuts the current to the winch motor（）.
A. after torque causes line pull to exceed the rated capacity of the winch
B. before the line pull reaches the rated capacity of the winch
C. when the line pull reaches the breaking strength of the fall
D. before the safe working load of the fall is reached
[单项选择]The system of derricks and winches has been largely replaced on newer ships by cranes（）it is very efficient.
A. when
B. because
C. unless
D. though
[单项选择]Main steam and exhaust pipes for winches and similar gear shall not pass through crew accommodation nor, whenever technically possible, through alleyways leading to crew accommodation; where they do pass through such alleyways, they shall be adequately （）.
A. ventilated and tagged
B. ventilated and cooled down
C. insulated and encased
D. insulated and warmed up
[单项选择]Lifeboat winches on a ship are required to be inspected and an entry made in the logbook. What should this entry include? （）
A. The time required to lower a lifeboat
B. The time required to raise a lifeboat
C. The date of inspection and condition of the winch
D. All of the above
[单项选择]Mooring winches are often combined with （） units so that one prime mover drives both.
A. crane
B. hatch cover
C. windlass
D. steering gear
[单项选择]As matter of fact, the damage to the winches was due to（）.
A. insufficiency of packaging
B. inherent vice of the cargo
C. improper stowage
D. rough handling
[单项选择]As matter of fact，the damage to the winches was due to（）.
A. insufficiency of packaging
B. inherent vice of the cargo
C. improper stowage
D. rough handling
[判断题]WORM保护机制是基于文件系统，在WORM文件系统内所有文件都能被锁定，且文件的保护期可以单独设置。
[单项选择]WORM技术是从LTO第几代产品开始的（）。
A. 3代
B. 4代
C. 5代
D. Magstar才有WORM技术
[判断题]HyperLock是OceanStor V3文件系统WORM的特性，目前支持法规遵从级保护模式。
[单项选择]诱导TH0细胞向TH1细胞极化的细胞因子是（）
A. IL-4
B. IFN-γ
C. IL-12
D. TNF-α
E. IL-10
[判断题]AD426定影TH1和TH2可以不同时接触要检测的物体。
[单项选择]狙击波（Worm.Zotob.A）病毒针对微软系统哪种严重漏洞进行主动攻击？（）
A. Dcom_rpc服务漏洞
B. Windows Plug and Play服务漏洞
C. Lsass服务漏洞
D. Winlogon服务漏洞
[多项选择]Which of the following characteristics describe the BPDU Guard feature（）
A. ABPDU Guard port should only be configured on ports with PortFast enabled.
B. BPDU Guard and PortFast should not be enabled on the same port.
C. BPDU Guard is used to ensure that superior BPDUs are not received on a switch port.
D. ABPDU Guard port receiving a BPDU will go into err-disablestate.
E. ABPDU Guard port receiving a BPDU will be disabled.
F. BPDU Guard can be enabled on any switch port.
