更多"When the power is shut off, the wir"的相关试题:
[单项选择]When cutting wire rope，seizings are put on each side of the cut.The seizings prevent the wire from unlaying and also（）.
A. Maintain the original balance of the tension in the wires and strands
B. Prevent moisture from entering between the wires at the cut end
C. Forces lubricant from the core to protect the raw，cut end
D. All of the above
[单项选择]The shut off valve at the gasoline tank which can be operated from outside the tank space （）.
A. controls the amount of gasoline to the engine
B. shuts off the gasoline supply at the tank
C. is used if the gasoline tank leaks
D. All of the above
[单项选择]When hanging off drill pipe in emergency situations aboard a ship，the preferred location of the drill bit is（）.
A. on bottom with the full drill string in tension
B. one stand (approximately 93 feet) off bottom
C. no deeper than the shoe of the last casing set
D. as close to the surface as possible
[单项选择]When lighting off an auxiliary boiler, which of the problems listed could cause the burners to sputter?（）
A. cold fuel oil
B. low fuel oil pressure
C. low atomizing steam pressure
D. water in the fuel oil
[单项选择]When working with lumber, wire and staples are not desirable to be used because（）.
A. they are not subjected to cause trouble
B. they are difficult to handle this kind of cargo
C. the efficiency of separating is raised
D. the efficiency of loading is greater
[单项选择]When the current flow through a copper wire increases, its （）
A. resistance will decrease
B. insulation will bum
C. temperature will increase
D. conductivity will increase
[单项选择]When off loading garbage to another ship, your records must identify that ship by name and （）
A. home port
B. operators name of record
C. official number
D. masters name
[单项选择]When a deck cargo is secured with chain or wire lashings and grab (pear) links，which statement is FALSE?（）
A. The amount of take-up is limited by the length of the turnbuckle
B. At the grab (pear) link，the slack end of chain should be led back and secured to the chain above the link
C. The lashings should be inspected each day and any slack taken up
D. The turnbuckle should be secured with a stick or lock nuts
[单项选择]hp3030提示：SCANNER ERROR OFF POWER ON POWER是什么地方的问题（）
A. 扫描组建老化导致初始化失败，可以先清洁扫描头，如果不行就只能更换了
B. 定影组件
C. 主板
D. 硒鼓
[单项选择]A power driven vessel when towing and the length of the tow exceeds 200 meters shall exhibit during daylight hours where they can best be seen which of the following shapes? （）
A. a diamond shape
B. two cones，apexes together
C. a black ball
D. one cone，apex upward
[单项选择]When securing a hook to the end of a wire rope you should use（）.
A. A bowline knot
B. A long splice
C. An overhand knot with a wire rope clip
D. Wire rope clips with a thimble eye
[单项选择]What happens to the pulling power of a winch when retrieving wire rope?（）
A. It increases
B. It decreases
C. It remains the same
D. It fluctuates，depending on the gearing system
[单项选择]The holding power of an anchor increases when the（）.
A. amount of chain lying along the bottom increases
B. length of the catenary is reduced
C. mooring line tension is increased
D. amount of chain lying along the bottom decreases
[单项选择]When two power-driven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision，they shall be deemed to be in（）.
A. crossing situation
B. head-on situation
C. restricted visibility
D. overtaking situation
[单项选择]
When the ship is in restricted visibility, the officer in charge of the engineering watch shall ensure that （）
Ⅰ.Bridge order relating to changes in speed or direction of operation areimmediately implemented
Ⅱ.auxiliary machinery used for maneuvering is readily available
Ⅲ.permanent air or steam pressure is available for sound signals
A. Ⅰ+Ⅱ
B. Ⅰ+Ⅲ
C. Ⅱ+Ⅲ
D. Ⅰ+Ⅱ+Ⅲ
[单项选择]When the current in a power transmission line is increased, the power loss （）
A. increases as the square of the current
B. decreases as the square root of the current
C. remains the same, as it is independent of current flow
D. increases in direct proportion as the current
[单项选择]When two power-driven vessels are meeting head-on and there is a risk of collision,each shall（）.
A. stop her engines
B. alter course to starboard
C. sound the danger signal
D. back down
[单项选择]A power-driven vessel，when towing astern，shall show（）.
A. two towing lights in a vertical line
B. a towing light in a vertical line above the sternlight
C. two towing lights in addition to the sternlight
D. a small white light in lieu of the sternlight
