Which of the following statements is TRUE regarding crane operations().

A . Radio communications allow the crane operator to disregard the use of hand signals B . The crane operators and signalman must be familiar with the correct hand signals C . The forward cranes can be operated from the bridge D . The aft cranes can be operated from the aft steering statio

时间:2022-10-05 00:50:51 所属题库:GPS、DF及LC的使用题库

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