A gradual decrease in the discharge pressure of an operating hydraulic pump can be caused by （）. ["the four-way control valve failing to shift","the bleeder valve sticking in the open position","cold hydraulic fluid","a clogged air vent falter on the oil reservoir"]
Where the contract is to insure the subject-matter at and from，or from one place to another or others，the policy is called a（）. ["contract policy","insurance policy","time policy","voyage policy"]
护患之间互通信息交谈的主要目的是（）。 ["获取或者提供信息","缓解患者的精神压力","增进护患之间的感情交流","有利于患者积极配合"]
PowerPoint中，插入剪贴画操作在插入下拉菜单中选择（）。 ["图片","文本框","影片和声音","表格"]
根据资产组合管理规定，按信用评级划分为III类客户授信余额最大限额不得高于（） ["A.25%","B.20%","C.15%","D.30%"]
怎样完成电气安全防护用品的管理与使用？
