Which of the following statements is TRUE regarding crane operations（）.<br>A:Radio communications allow the crane operator to disregard the use of hand signals<br>B:The crane operators and signalman must be familiar with the correct hand signals<br>C:The forward cranes can be operated from the bridge<br>D:The aft cranes can be operated from the aft steering station

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 station

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