操作移动及塔式起重机吊起，搬运，安置设备和材料。
Operate mobile and tower cranes to lift, move, position or place equipment and materials.
操作可移动塔式起重机移动机器设备及材料的位置。
Operate mobile and tower cranes to lift, move, position or place equipment and materials.
操作可移动塔式起重机移动机器设备及材料的位置。
Operate mobile and tower cranes to lift, move, position or place equipment and.
操作可移动塔式起重机移动机器设备及材料的位置。
Operate mobile and tower cranes to lift, move, position or place equipment and.
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