题目内容
（请给出正确答案）
[主观题]
简述超声波钢轨探伤仪与通用超声波探伤仪的区别
提问人：网友lixin080108
发布时间：2022-01-07
如搜索结果不匹配，请 
简述超声波钢轨探伤仪与通用超声波探伤仪的区别。
题目内容
（请给出正确答案）
您可能会需要：
安装简答题APP，拍照搜题省时又省心！
更多“简述超声波钢轨探伤仪与通用超声波探伤仪的区别”相关的问题
第7题
Examine the structure of the EMPLOYEES table:
EMPLOYEE_ID NUMBER Primary Key
FIRST_NAME VARCHAR2(25)
LAST_NAME VARCHAR2(25)
HIRE_DATE DATE
Which UPDATE statement is valid()
EMPLOYEE_ID NUMBER Primary Key
FIRST_NAME VARCHAR2(25)
LAST_NAME VARCHAR2(25)
HIRE_DATE DATE
Which UPDATE statement is valid()
A．UPDATE employees SET first_name = 'John' SET last_name ='Smith' WHERE employee_id = 180;
点击查看答案
B．UPDATE employees SET first_name = 'John', SET last_name ='Smith' WHERE employee_id = 180;
C．UPDATE employees SET first_name = 'John' AND last_name ='Smith' WHERE employee_id = 180;
D．UPDATE employees SET first_name = 'John', last_name ='Smith' WHERE employee_id = 180
