One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 473
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Multiple-choice question: During the operation of lifting machinery, it is necessary to adhere to the \"Ten Don’ts\" principle. In which of the following situations cannot lifting take place? ( ) A. The crane is equipped with clearly audible horns and bell signal devices, and distinct color markings are present on rotating parts such as the boom, hook, and counterweight. B. For critical and important goods, in order to prevent the lifting ropes from coming loose, a person should wear a safety belt, hold onto the hook, and be lifted safely to the desired location along with the goods. C. When lifting small-diameter steel pipes, they should be lifted according to the marked binding positions, with an angle of 50° between the lifting ropes and the pipes. D. When the load being lifted reaches 90% of the crane’s rated capacity, the load should first be lifted 200 mm–300 mm off the ground; thereafter, the safety of the crane, the reliability of the lifting ropes, the stability of the load, and the firmness of the bindings should be checked before proceeding with the lift. Answer: B. For critical and important goods, in order to prevent the lifting ropes from coming loose, a person should wear a safety belt, hold onto the hook, and be lifted safely to the desired location along with the goods
B. For key and important goods, in order to prevent the lifting ropes from coming loose, a person should be assigned to wear a safety belt, hold onto the hook, and safely lift the load together to the work site
B. For key and important goods, in order to prevent the lifting ropes from coming loose, a person should be assigned to wear a safety belt, hold onto the hook, and safely lift the load together to the work site
During the operation of lifting machinery, the principle of “ten things not to lift” must be adhered to. In which of the following situations cannot lifting take place? (C) A. The crane is equipped with clearly audible horns and bell signaling devices, and distinct color markings are present on rotating parts such as the boom, hook, and counterweight. B. For critical and important goods, in order to prevent the lifting ropes from coming loose, someone should wear a safety belt and hold onto the hook in order to safely lift the load along with it to the desired location. C. When lifting small-diameter steel pipes, they should be lifted at the positions indicated by the markings, with an angle of 50° between the lifting ropes and the pipes. D. When the load being lifted reaches 90% of the crane’s rated capacity, the load should first be lifted 200 mm–300 mm off the ground; after that, the safety of the crane, the reliability of the lifting ropes, the stability of the load, and the firmness of the bindings should be checked before proceeding with the lift
B. For key and important goods, in order to prevent the lifting ropes from coming loose, a person should be assigned to wear a safety belt, hold onto the hook, and safely lift the load together to the work site