Oil fires are best extinguished by（）. ["cutting off the supply of oxygen","removing the fuel","cooling below the ignition temperature","spraying with water"]
授信业务获批后房地产开发资质在（）级以下的，须存入一定比例的保证金。 ["一级","二级","三级","四级"]
为了加强公司域的安全性需要设置域安全策略。下列与密码策略相关的是（）。 ["密码必须符合复杂性要求","密码最长使用期限","密码长度最小值","账户锁定时间"]
如何检修电动机？
Multiple fire pumps may be used for other purposes provided that one pump is（）. ["on line to the fire main","kept available for use on the fire main at all times","capable of being connected to the fire main","rated at or above 125 psi"]
用人单位为劳动者提供的专项培训费用有哪些？
