單項選擇題

A “l(fā)iner” in riveted construction of a vessel is a(n) （）.

A.small plate which fills the aperture between riveted strakes and the vessel framing
B.backing plate which is used to level the strakes while riveting，and then removed
C.internal frame to which the side shell is riveted
D.seam that is welded after riveting is completed

你可能感興趣的試題

單項選擇題

A “full service” Loran-C receiver will provide（）.

A.matching pulse rates of at least 20 stations
B.an automatic on-and-off switch
C.a horizontal matching of all delayed hyperbolic signals
D.automatic signal acquisition and cycle matching

單項選擇題

A “figure eight” knot is used to（）.

A.be a stopper
B.shorten a line
C.join lines of equal size
D.keep a line from passing through a sheave

97免费在线观看视频,亚洲综合自拍网,黄色毛片免费观看,热久久综合网,免费看日产一区二区三区 狠狠操av,久久久涩涩涩,在线精品免费视频,人人插天天干,久久91精品国产91久久

A “l(fā)iner” in riveted construction of a vessel is a(n) （）.

你可能感興趣的試題

A “full service” Loran-C receiver will provide（）.

A “figure eight” knot is used to（）.

97免费在线观看视频,亚洲综合自拍网,黄色毛片免费观看,热久久综合网,免费看日产一区二区三区狠狠操av,久久久涩涩涩,在线精品免费视频,人人插天天干,久久91精品国产91久久