更多"（） may be fitted for operating the "的相关试题:
[单项选择]A warp end may be fitted for operating the derrick topping wire which adjusts the derrick （）.
A. length
B. slack
C. height
D. rotation direction
[单项选择]The operating medium for control systems may be （）.
A. compressed air
B. hydraulic oil
C. electricity
D. All of the above
[单项选择]Engine operating conditions may be indicated by the color of the exhaust smoke.Black smoke could indicate（）
A. an insufficient speed droop setting
B. an overloaded engine
C. clogged drain holes in the oil control rings
D. complete combustion
[单项选择]Manually operated band brakes may be fitted and （） will have a brake arranged to fail-safe.
A. the drive pump
B. the drive motor
C. the warp end
D. the purchase
[单项选择]The damaged derrick（）now.
A. has repaired
B. is being repaired
C. is repaired
D. will be repaired
[单项选择]Be carefully when you（）the derrick.
A. operate
B. operating
C. operated
D. operates
[单项选择]Topping wires fix the height of the derricks and （） to the deck may be used to prevent fore and aft movement.
A. stays
B. winches
C. barrels
D. brakes
[单项选择]Stress on the topping lift of a swinging boom can be reduced by（）.
A. rigging a back stay
B. raising the boom
C. increasing the mechanical advantage of the cargo purchase
D. taking all slack out of the preventer
[单项选择]When the union purchase derrick is operated, one derrick is positioned over the quayside and the other almost vertically over the （）.
A. dock
B. hold
C. pedestal
D. machinery space
[单项选择]Insufficient end clearance on newly fitted piston rings in a diesel enginewill cause the rings to（）
A. jam in the most worn part of the cylinder when the rings expand
B. break in the most worn part of the cylinder when the rings expand
C. wear eccentrically on the side opposite the end gap
D. overheat and jam at the top center on the combustion stroke
[单项选择]A single heavy wire made up for the topping lift is called a（）.
A. Bale
B. Spanner wire
C. Bull line
D. Working guy
[单项选择]Our starboard derrick boom of hatch No.4 is badly cracked（）that it has become entirely useless.
A. at its goose neck to such a extent
B. at it's goose neck to such an extent
C. at it's goose neck for such a extent
D. at its goose neck to such an extent
[单项选择]What is meant by the term TOPPING THE BOOM?（）
A. Lowering the boom
B. Raising the boom
C. Spotting the boom over the deck
D. Swinging the boom athwartships
[单项选择]（）using the derrick at once, the gosseneck is bent.
A. Continue
B. Start
C. Commence
D. Stop
[单项选择]0ur starboard derrick boom of hatch No.4 is baddly cracked（）that it has become entirely useless.
A. at its goose neck to such a extent
B. at it's goose neck to such an extent
C. at it's goose neck for such a extent
D. at its goose neck to such an extent
[单项选择]Preventer bars are fitted on lifeboat releasing hooks to prevent（）.
A. the falls from unhooking if the releasing gear is operated accidentally while the boat is being lowered
B. operation of the release lever until the boat is waterborne
C. the falls from rehooking after they have been released
D. accidental unhooking when the falls become slack
[单项选择]Safety shackles are fitted with（）.
A. a threaded bolt
B. a round pin，with a cotter pin
C. a threaded bolt，locknuts，and cotter pins
D. round pins and locknuts
