更多"How should you signal the crane ope"的相关试题:
[单项选择]How should you signal the crane operator to raise the boom and lower the load?（）.
A. Extend arm with the palm down and and hold this position rigidly
B. Place both fists in front of the body with the thumbs pointing outward each other
C. Clasp hands in front of you body
D. Extend arm with the thumb pointing up, and flex the finger s in and out for as long as the load movement is desired
[单项选择]How should you signal the crane operator to lower the boom and raise the load（）.
A. Extend arm and point finger in the direction to move the boom
B. Extend arm with thumb pointing downward and flex fingers in and out
C. With forearm vertical and forefinger pointing up，move hand in small horizontal circles
D. With arm extended downwards and forefinger pointing down，move hand in small horizontal circles
[单项选择]How should you signal the crane operator to dog everthing?（）.
A. Place both fists in front of the body with the thumbs pointing outward each other
B. Clasp hands in front of your body
C. Extend arm with the palm down and and hold this position rigidly
D. Extend arm with the thumb pointing up, and flex the finger s in and out
[单项选择]How should you signal the crane operator to stop in an emergency?（）.
A. Extend arm with the palm down and and hold this position rigidly
B. Place clasped hands in frontof your body
C. extend arm and move hand rapidly right and left with the plam outward
D. Place both fists in front of the body with the thumbs pointing outward
[单项选择]How should you signal the crane operator to swing?（）.
A. With both arms extended out and palms to down, move arms back and forth
B. With arm ertended downwards and forefinger pointing down,move hand in small horizontal crecles
C. Extend arm and point finger in the direction to move boom
D. Place both fists in front of the body with the thumbs pointing outward
[单项选择]How should you signal the crane operator to use the main hoist?（）.
A. Use one hand to give any miotion signal , and place the other hand motionless in front of the hand giving the motion signal
B. Extend arm with the thumb pointing up , and flex the fingers in and out for as long as the load movement is desired
C. First tap your elbow with one hand , and then proceed to use regular signals
D. First tap the top of your head with your first , and then proceed to use regular signals
[单项选择]How should you signal the crane operator to move slowly（）.
A. Use one hand to give any motion signal，and place the other hand motionless in front of the hand giving the motion signa
B. Extend arm with the thumb pointing up，and flex the fingers in and out for as long as the load movement is desired
C. First tap your elbow with one hand and then proceed to use regular signals
D. First tap the top of your head with your fist and then proceed to use regular signals
[单项选择]How should you signal the crane operator to hoist（）.
A. With forearm vertical and forefinger pointing up，move hand in small horizontal circles
B. With arm extended downwards and forefinger pointing down，move hand in small horizontal circles
C. Extend arm with fingers closed and thumb pointing upward
D. Place both fists in front of body with the thumbs pointing upward
[单项选择]How should you signal the crane operator to stop?（）.
A. Place both fists in front of the body with the thumbs pointing outward
B. With both arms extended out and palms to down, move arms back and forth
C. Extend arm with the palm down and and hold this position rigidly
D. Clasp hands in front of you body
[单项选择]How should signal flares be used after you have abandoned ship and are adrift in a liferaft?（）.
A. Immediately use all the signals at once
B. Use all the signals during the first night
C. Employ a signal every hour after abandoning ship until they are gone
D. Use them only when you are aware of a ship or plane in the area
[单项选择]“How do you read?” “I read you with signal strength one”（）.
A. poor
B. bad
C. fair
D. good
[单项选择]The signal man assisting a crane operator has his arm extended with his fingers closed and thumb pointing upward. This is the signal to（）.
A. raise the boom
B. raise the hook
C. raise the boom and hook
D. check the boom stop
[单项选择]What publications should a GMDSS Operator consult regarding the proper set-up and operation of vessel equipment（）.
A. ITU Publications
B. The manufacturers instruction manuals
C. Part 90 of the FCC Rules and Regulations
D. Code of Federal Regulations，Title 47，Part 80，Subpart W
[单项选择]In a general cargo crane, （） is fitted to raise or lower the jib.
A. the slewing motor
B. the luffing motor
C. the hoisting motor
D. none of the above
[单项选择]The operator of electrical motors should keep a constant check on the loads they carry because （）
A. low loads necessitate frequent insulation cleaning
B. exceeding nameplate values shortens useful life
C. energy is wasted if full loading is not utilized
D. power factor correction methods are load dependent
