A、4，based on the breaking strength
B、5，based on the maximum allowable stress
C、6，based on the maximum working load
D、8，based on the normal working load
更多“Blocks and falls used as lifeboat gear must be designed with a minimum safety factor of（）.”相关的问题
A、rising temperatures and falling barometric pressure B、falling temperature and pressure C、falling temperatures and rising pressure D、rising barometric pressure and temperatures
A、the ride and fall of the tide B、ride with fall of the tide C、riding and falling of the tide D、riding with falling of the tide
A、Turn the case upside down, shake gently and let the screw fall out. B、Use a shop vacuum to retrieve the screw. C、Use the hardware abstraction layer (HAL). D、Use an extension magnet.
A、A. The df command only counts the number of disk blocks and superblocks. B、B. The df command ignores space used for inodes, gnodes, and vnodes. C、C. The du command does not take into account filesystem metadata. D、D. The du command counts indirect blocks and superblocks in its calculations.
A、Use the Data Block Wizard and base the relation on a REF pointer. B、In the Object Navigator, select the Relation node under the master block and click the Create icon. Build the relation manually and coordinate the blocks using triggers. C、Use the Data Block Wizard, and base the relation on the primary key-foreign key relationship in the database. D、This task is not possible because master-detail relations can be implemented only for blocks based on relational tables.
A、secured forward and aft where readily available B、secured amidships where they will not hinder the personnel C、used for fending off D、used for picking up survivors in the water
A、A.all the fall except the hauling part B、B.the hook that engages the weight to be moved C、C.that part to which power is applied D、D.that part of the falls made fast to one of the blocks
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