在国家信息安全等级保护制度中，信息系统的安全等级被分为（）个等级。 ["2个","3个","4个","5个"]
检查点焊机各气缸及气动阀工作是否正常是（）必做的内容。 ["日常检查","设备一级保养","设备二级保养","设备月保养"]
一板式吊耳，孔直径D=100mm，半圆弧形的边缘R=110mm，板厚30mm，A3钢制造，受力方向与吊耳轴线垂直，承受180KN力，圆环处截面的剪应力为（） ["80Mpa","100Mpa","120Ppa"]
As there was a power failure in the hospital, the doctor had to （）operation. ["call for","call off","call on","cal lout"]
五律的定型，是由宋之问和（）后完成的。
银行业金融机构发生涉案金额等值人民币一百万元（含）以上案件的应当如何处理？
