更多"Deck cranes require（） time to prepa"的相关试题:
[单项选择]You should always wear（）when working on deck.
A. helmet
B. slippers
C. goggles
D. immersion suits
[单项选择]A well in the uppermost deck of a shelter deck vessel which has only a temporary means of closing for the purpose of gaining an exemption from tonnage measurement is called a（n）（）.
A. Exemption space
B. Tonnage deck
C. Cofferdam
D. Tonnage opening
[单项选择]The（）is the intermediate deck between upper deck and the inside bottom of the vessel.
A. forcastle
B. tweendeck
C. hatches
D. peak tanks
[单项选择]To shore up the main deck for the stowage of deck cargo means to（）.
A. weld pad eyes on deck in proper position to secure the cargo
B. strengthen the main deck by placing pillars underneath it in the tween-decks
C. distribute the weight of the cargo by placing fore-and-aft planks on the main deck
D. package the cargo in wooden crates so it will not damage the deck
[单项选择]I have spent a lot of time（）working on this problem.
A. at
B. –（不填）
C. on
D. with
[单项选择]It is high time that we（）working to take a break.
A. should stop
B. would stop
C. stopped
D. stop
[单项选择]Annual inspection of vessel cranes shall be conducted by（）.
A. HAS
B. the person in charge
C. a qualified inspector
D. the crane operator
[单项选择]The design specifications for cranes and crane foundations on ship’s are set and published by the（）.
A. American Society of Mechanical Engineers
B. American Petroleum Institute
C. Society of Petroleum Engineers
D. American Society of Civil Engineers
[单项选择]Pedestal cranes have limit switches to restrict movement of which function（s）（）.
A. Hoist upper & lower limits
B. Luff travel limits
C. Rider block hoist upper & lower limits
D. All of the above
[单项选择]Hydraulic cranes must be properly warmed-up before being operated because （）.
A. warm-up allows the hydraulic system to become charged with oil
B. warm-up allows the relief valves to be properly tested
C. hydraulic strainers operate only during the warm-up period
D. hydraulic fluid must be at the proper viscosity
[单项选择]For occasional heavy loads, two cranes can be arranged to work together. The operating （） for deck crane motors may be hydraulic electric.
A. principle
B. medium
C. instruction
D. voltage
[单项选择]Some cranes are mounted in pairs on a common platform which can be rotated through（）.
A. 360°
B. 270°
C. 180°
D. 90°
[单项选择]What is/are the advantage（s）of cranes over conventional cargo booms（）.
A. Cranes are able to pick up and drop loads over a greater spotting area
B. Increased safety because the deck is clear of running and standing rigging
C. Simplicity of operation of the crane by its operator
D. All of the above
[单项选择]Many dangerous cargoes are stowed on deck becaused of the（）.
A. danger to crew and cargo
B. necessity of periodic inspection
C. possibile need to jettison
D. All of the above
[单项选择]Mariners must ascertain that deck loads are stowed in such a manner as（）.
A. to affect the vessel's stability
B. not to affect the vessel's stability
C. to keep the vessel on even keel
D. not to keep the vessel on even keel
[单项选择]These include deck machinery such as mooring equipment, anchor handling equipment, cranes and （）.
A. boilers
B. bow thrusters
C. stabilizers
D. hatch covers
[单项选择]A deck beam does NOT（）.
A. act as a beam to support vertical deck loads
B. lessen the longitudinal stiffness of the vessel
C. act as a tie to keep the sides of the ship in place
D. act as a web to prevent plate wrinkling due to twisting action on the vessel
[单项选择]Many dangerous cargoes are stowed on deck because of the（）.
A. danger to crew and cargo
B. necessity of periodic inspection
C. possible need to jettison
D. All of the above
[单项选择]Six containers will be loaded（）deck.
A. in
B. at
C. on
D. for
