操作千伏级电气设备主回路时，操作人员必须戴绝缘手套或穿电工绝缘靴。（）
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中医认为小儿饮食注意事项是避免偏食、节制零食、按时进食、提倡“三分饥”。
A. 正确
B. 错误
There are many reasons why customers lack sufficient security measures on the network. Which two reasons for insufficient security are typical of the customers today?（）
A. the desire to avoid unnecessary technologies
B. the belief that free security tools are sufficient
C. the perceived costs of security solutions
D. the use of hosted email services eliminating the need for local security
E. the lack of threats to their network
F. the lack of risk analysi
EDI软件可分为（）三大类。
A. 系统软件
B. 转换软件
C. 翻译软件
D. 通信软件
E. 应用软件
学生心理发展的基本特征是：连续性与阶段性、定向性与顺序性、（）与差异性。
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