What is TRUE concerning frapping lines?（）

A . Do not exceed rated load capacity of crane and container spreader or slings B . During any cargo handling operation，the safety of personnel is paramount C . Cargo handlers must be outfitted with adequate protection from personal injury D . All the above

A . The Master of the vessel must be on the bridge when the radar is in use B . The radar equipment is only required to be used in restricted visibility C . The use of a radar excuses a vessel from the need of a look-out D . This equipment must be used to obtain early warning of risk of collisio

A . The catenary in a hawser should be sufficient so that the hawser just touches the bottom B . The hawser is of sufficient length for towing when taut between tug and tow C . Increasing speed usually increases the catenary in the hawser D . Shortening the tow hawser generally decreases the maneuverability of the tug

A . The Chief Mate and Master of a container ship should have the proposed stowage plan ready for the stevedore upon arrival in port B . When stowed on deck of a break bulk ship，the bottom of the container must be evenly supported throughout C . With tiered containers，a 40-foot container may be stowed on top of two 20-foot containers D . Deck load calculations must take into account the square footage of the entire container bottom

A . It cannot be used in all parts of the world B . There are 12 functioning GPS satellites at present C . It may be suspended without warning D . Two position lines are used to give a 2D fix

A . When any vessel fails to understand the intentions of an approaching vessel she must sound the danger signal B . Only the stand-on vessel can sound the danger signal C . Distress signals may be used in place of the danger signal D . The danger signal consists of 4 or more short blasts of the whistle

A . Fuel vapors gather in the lowest portions of the vessel B . Fuel vapors can only be ignited by an open flame C . Vent outlets should be located above the level of the carburetor air intake D . None of the above

A . They must be released by freeing a safety shackle B . They should not be released until the boat is in lowering position C . They may be adjusted by a turnbuckle D . They are normally used only with radial davit

A . The temperature rises after a cold front passes B . The barometric pressure rises when a warm front passes C . A cold front generally passes faster than a warm front D . A warm front usually has more violent weather associated with it than a cold front

A . There cannot be a radiotelephone located anywhere except in the wheelhouse B . The officer in charge of the wheelhouse is considered to have the radiotelephone watch C . Only distress messages may be transmitted over channel 13 D . Only the Master of the vessel is allowed to speak over the radiotelephone

A . The light comes on at sunset B . There is an emergency light if the main light is extinguished C . The height of the light is 24 feet D . The tower is painted with black and white stripe

A . Open-bed containers may be used to transport hazardous materials if the cargo is properly secured B . A portable cargo tank of a flammable，cryogenic liquid may not be in transit for a period exceeding its marked rated holding time unless the liquid is inhibited C . A portable cargo tank containing a cryogenic liquid must be shipped on deck unless forced ventilation is provided to the tween-decks D . A container loaded with packages of tear gas would display a placard reading Irritant

A . Sweat damage in containers is unusual due to the small enclosed volume of air B . In general，containerized hygroscopic cargoes are the only ones subject to sweat damage C . Containers should be ventilated，dehumidified，or the contents physically protected against sweat damage D . Sweat damage is not a problem except in insulated and refrigerated container

A . High conductivity of the distillate indicates distillate salinity is excessive B . Increasing the absolute pressure of the shell will increase the distillers capacity C . Mesh separators are used in evaporators to filter the distillate D . Reducing the brine density will reduce the heat lost overboard

A . They are particularly suited for pumping high viscosity fluids B . They are started with the discharge valve opened C . The flow of liquid is developed by imparting energy due to the rotation of an impeller D . They are always mounted in a horizontal positio

A . The edge routers can use any locally configured IPv6 address. B . Hosts and routers inside a 6to4 site will need a special code. C . An edge router must use IPv6 address of 2002::/16 in its prefix. D . IPv4 traffic is encapsulated with an IPv6 header.

A . They occur when the Sun is at minimum declination north or south B . They occur when the Moon is at maximum declination north or south C . The difference in height between consecutive high or low tides is at a minimum D . They are used as the basis for the vulgar establishment of the port

A . It is a sailing maneuver which brings the vessel's head through the wind B . It connects the boom to the mast and allows the boom to swing freely C . It is a sailing condition where there is a loss of air flow over the sails D . None of the above

A . They occur only at quadrature B . They occur when the Moon is nearest the Earth C . They cause diurnal tides to become mixed D . They have a decreased range from normal

A．It is the best book on marriage. B．It is a handbook of marriage. C．It gives quite some ideas of English social life in the past. D．It provides a lot of information of former time wealthy families.

A.They are particularly suited for pumping high viscosity fluids B.They are started with the discharge valve opened C.The flow of liquid is developed by imparting energy due to the rotation of an impeller D.They are always mounted in a horizontal position

A．Children under two are charged 10% of the normal fare under any circumstances. B．The second child under two accompanying the same adult is charged .50% of the normal fare. C．A 12-year-old is charged 50% of the normal fare. D．Unaccompanied children are charged the normal fare.

B．False