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1、1船舶索具及保养1、_ are two vertical supports，usually steel，one each side of the centerline of the ship used to support booms b AShrouds BKing posts CStays DTurnbuckles2、_ are used for anchor gear in marine work where the chains must withstand the corrosive effects of seawater a AChains BWires CRopes DLines
2、 3、_ provide athwartship support for the mast or king posts a AShrouds BKing posts CStays DTurnbuckles 4、A “sheepshank” is used to _d Akeep a line from fraying Bjoin lines of unequal size Cstop off a line Dshorten a line5、A 6x12，two-inch wire rope has _ cA12 strands and a two-inch diameter B12 stran
3、ds and a two-inch circumference C6 strands and a two-inch diameter D6 strands and a two-inch circumference6、A 6x19 wire rope would be _ cA6 inches in diameter and 19 fathoms long B6 inches in circumference with 19 strands C6 strands with 19 wires in each strand D19 strands with 6 wires in each stran
4、d 7、A block and tackle is“rove to advantage”This means that the _ c Ablocks have been overhauled Bhauling parts of two tackles are attached Chauling part leads through the movable block Dhauling part leads through the standing block 8、A cargo boom is a _ a Adouble sized mattress consists of more tha
5、n 890 coils Bspar extending from a mast or a king post Cflap（Becker rudder）can be fitted to the rudders trailing edge Dbridle arrangement having a long beam of the length of the container9、A chain bridle is preferable to a wire rope towing bridle on a long ocean tow because chain _ d Ais more flexib
6、le and has the ability to absorb shock because of its weight Bis less subject to wear and damage from abrasion Crequires little maintenance2DAll of the above 10、A chain bridle is used when towing astern because it _ b AIs easy to connect BProvides an effective catenary and absorbs shock due to its w
7、eight CMakes rigging a swivel unnecessary DPrevents the tow from yawing by the drag of the chains in a seaway 11、A Chinese stopper（two lines）will hold best when you _ b Afasten the bitter ends to the mooring line with half hitches Btwist the ends together and hold them in the direction of the pull C
8、twist the ends together and hold them in the direction opposite to the pull Dtwist the ends together and hold them at right angles to the mooring line12、A common class of wire rope is the 6X37 classWhat does the 37 represent _ d ANumber of wires in the inner core BNumber of strands per wire rope CTe
9、nsile strength of the wire DNumber of wires per strand 13、A monkey fist is found on a _ a AHeaving line BLead line CManrope DMooring line 14、A natural fiber rope can be ruined by dampness because it may _ a Arot Bshrink Cstretch Dunlay 15、A pelican hook _ a ACan be released while under strain BIs us
10、ed for boat falls CIs used for extra heavy loads DIs used for light loads only 16、A rope ladder with wooden rungs is a _ c Adrop ladder Blife ladder CJacobs ladder Djury ladder 17、A serving mallet is used in _ a Acovering wire or fiber rope Bforcing fids into a line Cdogging hatches Dsplicing lines
11、18、A sheepshank is used to _ d Akeep a line from fraying Bjoin lines of unequal size Cstop off a line Dshorten a line319、A shepherds crook is used to _ bAlower spring buoys into the water Bfind an anchor after the buoy has been lost Ctransfer a pennant wire to the anchor handling boat Dclean chain a
12、s it is hauled into the rig20、A single-screw vessel going ahead tends to turn more rapidly to port because of propeller _ c Adischarge current Bsuction current Csidewise force Dthrust 21、A snatch block is a _ c Ablock used only with manila rope Bchock roller Chinged block Dstrong block used for shor
13、t，sharp pulls 22、A stage should only be rigged _ c Aover the bow or stern of a vessel Bover the flat sides of a vessel Cover the open water Dover the dockside23、A stopper used in securing the ground tackle for sea that consists of a grab attached to a turnbuckle is a _ c Ariding pawl Bbuckler Cdevil
14、s claw Dlocking ring 24、Chafing gear is used to _ c Aanchor the boat Bpick up heavy loads Cprotect fiber rope from abrasion Dstrengthen mooring lines 25、Coiling new rope against the lay，bringing the lower end up through the center of the coil，then coiling with the lay，in order to remove the kinks，is known as _d ACoiling BFaking CFlemishing DThoroughfooting 26、How are riveted lap joints made watertight _ c AThe faying surfaces are coated with white lead（or similar product）before the rivets are set BA sealing weld b
