Question 442 Deck General

The correct answer is D) All of the above. This is because twin pedestal cranes are typically designed with the following features: 1) A slew drive system that provides for rotation of each individual crane, allowing for independent movement. 2) Each crane has a single boom of the partial-level luffing type, meaning the boom can raise and lower to a limited degree while maintaining its angle. 3) An independent slew drive system that rotates the entire turntable, allowing the cranes to move together as a unit. The other answer choices are incorrect because they only describe part of the typical twin pedestal crane configuration. The correct answer encompasses all the key features of these specialized crane systems.