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单选题
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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更多 “单选题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” 相关考题
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单选题Which of the following statements is true regarding the VERSIONS BETWEEN clause？（）A
The VERSIONS BETWEEN clause may be used in DML statements.B
The VERSIONS BETWEEN clause may be used in DDL statements.C
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