加权平均资本是指（） ["将各种资本的个别资本成本累加确定","以各种资本占全部资本的比重为权数，对个别资本成本进行加权平均确定","各种资本的个别资本成本累加的平均数","各种资本个别资本成本的算术平均数"]
In the case of an injury causing a person to be incapacitated，the Master or person in charge of a mobile offshore drilling unit must submit a report to the（）. ["nearest Marine Safety or Marine Inspection Office","nearest hospital","Department of Energy","American Bureau of Shipping"]
战勤保障大队抢险救援头盔储备数量为50顶。
60―70年代香港的女性作家有（） ["亦舒","林艳妮","岑凯伦","梁凤仪"]
战勤保障大队防静电服储备数量为5套。
利用外延生长技术在衬底上形成所需的外延层后，还要经过什么工艺，才能形成一颗颗独立的LED芯片？
