信贷信息采集需要经过数据报送、校验加载、反馈三个环节。
参考答案：对
水泵轴承应定期加注（）。
Which of following statements about testing software with data is (are) true Ⅰ. The primary purpose of such testing is to find errors. Ⅱ. Such testing can demonstrate the existence of errors but can not demonstrate the absence of errors.
A．Neither
B．Ⅰ only
C．Ⅱ only
D．Ⅰ and Ⅱ
