YJ19卷接机重量控制指针显示重量偏差范围，如指针（）超出±4.5℅的烟支数多于150支，机器将由重量报警信号停机。
参考答案：偏移
各单位对信息安全保护等级（）级以上(含（）级)的定级对象，要认真填写《定级信息系统安全等级保护备案表》及要求的相关材料，做好备案工作
A.一
B.二
C.三
D.四
Password is a secret series of (69) that enables a user to access a file, computer, or program. On multi-user systems, each user must enter his or her password before the computer will respond to (70) . The password helps ensure that (71) users do not access the computer. In addition, data files and programs may require a password.
A．order
B．commands
C．instruction
D．tracks
