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 signaB.Extend arm with the thumb pointing up，and flex the fingers in and out for as long as the load movement is desiredC.First tap your elbow with one hand and then proceed to use regular signalsD.First tap the top of your head with your fist and then proceed to use regular signals
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
相关考题：
When using a hand held smoke signal from a lifeboat, you should activate the signal _____.A.on the downwind sideB.on the upwind sideC.inside the boatD.at the stern
How should we go through the security check?A.you should wait one by oneB.show your certificate onlyC.put your carry _on baggage on the belt ,which will take it to be sereen bay X-ray equipmentD.you should go through the gate and the staff may give you a personal search
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 boomB.raise the hookC.raise the boom and hookD.check the boom stop
How should you signal the crane operator to hoist ________．A.With forearm vertical and forefinger pointing up，move hand in small horizontal circlesB.With arm extended downwards and forefinger pointing down，move hand in small horizontal circlesC.Extend arm with fingers closed and thumb pointing upwardD.Place both fists in front of body with the thumbs pointing upward
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 boomB.Extend arm with thumb pointing downward and flex fingers in and outC.With forearm vertical and forefinger pointing up，move hand in small horizontal circlesD.With arm extended downwards and forefinger pointing down，move hand in small horizontal circles
Which of the following statements is TRUE regarding crane operations ________．A.Radio communications allow the crane operator to disregard the use of hand signalsB.The crane operators and signalman must be familiar with the correct hand signalsC.The forward cranes can be operated from the bridgeD.The aft cranes can be operated from the aft steering station
How should you signal the crane operator to lower the boom?______.A.With arm extended and fingers closed, point thumb downwardB.With arm extended downwards and forefinger pointing down, move hand in small horizontal circlesC.Extend arm with the palm down, and hold this position rigidlyD.With hands clasped in front of your body
How should you signal the crane operator to raise the boom?_________.A.Extend arm with the thumb pointing up and flex the fingers in and outB.Place both fists in front of the body with the thumbs pointing upwardC.With forearm vertical and forefinger pointing up，move hand in small horizontal circlesD.Extend arm with fingers closed and point thumb upward
How should you signal the crane operator to stop?______.A.Place both fists in front of your body with thumbs pointing pointing outwardB.With both arms extended out and palms down, move arms back and forthC.Extend arm with the palm down and hold this position rigidlyD.Clasp hands in front of your body
How should you signal the crane operator to dog everyting?______.A.Place both fists in front of your body with thumbs pointing toward each otherB.Clasp hands in front of your bodyC.Extend arm with the palm down and hold this position rigidlyD.Extend arm with the thumb pointing up, and flex the fingers in and out
Could you give me a helping hand?（）I want to clean my garageAHow's that.BSure. What can I do for you?CNot at all.DWhich one?
Could you give me a helping hand?（）I want to clean my garageA、How's that.B、Sure. What can I do for you?C、Not at all.D、Which one?
单选题How should you signal the crane operator to raise the boom?（）.AExtend arm with the thumb pointing up and flex the fingers in and outBPlace both fists in front of the body with the thumbs pointing upwardCWith forearm vertical and forefinger pointing up,move hand in small horizond circlesDExtend arm with the fingers closed and thumb upward
单选题The signal man assisting a crane operator has his arm extended with his fingers closed and thumb pointing upward. This is the signal to（）.Araise the boomBraise the hookCraise the boom and hookDcheck the boom stop
单选题Which of the following statements is TRUE regarding crane operations（）.ARadio communications allow the crane operator to disregard the use of hand signalsBThe crane operators and signalman must be familiar with the correct hand signalsCThe forward cranes can be operated from the bridgeDThe aft cranes can be operated from the aft steering station
单选题How should you signal the crane operator to move slowly（）.AUse one hand to give any motion signal，and place the other hand motionless in front of the hand giving the motion signaBExtend arm with the thumb pointing up，and flex the fingers in and out for as long as the load movement is desiredCFirst tap your elbow with one hand and then proceed to use regular signalsDFirst tap the top of your head with your fist and then proceed to use regular signals
单选题How should you signal the crane operator to swing?（）.AWith both arms extended out and palms to down, move arms back and forthBWith arm ertended downwards and forefinger pointing down,move hand in small horizontal creclesCExtend arm and point finger in the direction to move boomDPlace both fists in front of the body with the thumbs pointing outward
单选题How should you signal the crane operator to lower the boom and raise the load（）.AExtend arm and point finger in the direction to move the boomBExtend arm with thumb pointing downward and flex fingers in and outCWith forearm vertical and forefinger pointing up，move hand in small horizontal circlesDWith arm extended downwards and forefinger pointing down，move hand in small horizontal circles
单选题How should you signal the crane operator to stop in an emergency?（）AExtend arm with the palm down and hold this position rigidlyBPlace clasped hands in front of your bodyCExtend arm and move hand rapidly right and left with the palm downDPlace both fists in front of the body with the thumbs pointing outward
单选题How should you signal the crane operator to stop?（）.APlace both fists in front of the body with the thumbs pointing outwardBWith both arms extended out and palms to down, move arms back and forthCExtend arm with the palm down and and hold this position rigidlyDClasp hands in front of you body
单选题How should you signal the crane operator to hoist（）.AWith forearm vertical and forefinger pointing up，move hand in small horizontal circlesBWith arm extended downwards and forefinger pointing down，move hand in small horizontal circlesCExtend arm with fingers closed and thumb pointing upwardDPlace both fists in front of body with the thumbs pointing upward
单选题How should you signal the crane operator to use the main hoist?（）.AUse one hand to give any miotion signal , and place the other hand motionless in front of the hand giving the motion signalBExtend arm with the thumb pointing up , and flex the fingers in and out for as long as the load movement is desiredCFirst tap your elbow with one hand , and then proceed to use regular signalsDFirst tap the top of your head with your first , and then proceed to use regular signals
单选题How should you signal the crane operator to dog everthing?（）.APlace both fists in front of the body with the thumbs pointing outward each otherBClasp hands in front of your bodyCExtend arm with the palm down and and hold this position rigidlyDExtend arm with the thumb pointing up, and flex the finger s in and out
单选题How should you signal the crane operator to raise the boom and lower the load?（）.AExtend arm with the palm down and and hold this position rigidlyBPlace both fists in front of the body with the thumbs pointing outward each otherCClasp hands in front of you bodyDExtend arm with the thumb pointing up, and flex the finger s in and out for as long as the load movement is desired
单选题Could you give me a helping hand?（）I want to clean my garageAHow's that.BSure. What can I do for you?CNot at all.DWhich one?