PLC的I/O口不具备的功能是()。
A.电平转换
B.光电隔离
C.状态指示
D.与上位机通讯
参考答案:D
Every student in our class had an application form in his hand, but no one knew which office _____.
A.to send it to
B.to send it
C.to be sent to
D.to have it sent
商业银行内部控制过程评价的具体评分标准为:被评价对象的过程和风险已被充分识别的,且被评价项目的过程和对风险的控制措施被规定并遵循要求的,可得该项分值的()。
A、百分之十
B、百分之二十
C、百分之三十
D、百分之四十