负事故主要责任的，承担损失费用的（）以上。 ["10天","20天","30天","60天"]
Given： Which three code fragments， inserted independently at line 6， will compile？（） ["list.add（"foo"）；","Object o = list；","String s = list.get（0）；","list = new ArrayList（）；<\/string>"]
城市公共交通按规划期限划分为哪三个层次？
Click the Exhibit button and examine the data in the EMPLOYEES table. On the EMPLOYEES table, EMPLOYEE_ID is the primary key. MGR_ID is the ID of managers and refers to the EMPLOYEE_ID. The JOB_ID column is a NOT NULL column. Evaluate this DELETE statement: DELETE employee_id, salary, job_id FROM employees WHERE dept_id = 90; Why does the DELETE statement fail when you execute it?（） ["There is no row with dept_id 90 in the EMPLOYEES table.","You cannot delete the JOB_ID column because it is a NOT NULL column.","You cannot specify column names in the DELETE clause of the DELETE statement.","You cannot delete the EMPLOYEE_ID column because it is the primary key of the table."]
张某，嵌顿绞窄性腹外疝，需要急诊手术，护士小王使用煮沸消毒法消毒手术用品，正确的做法是（） ["煮沸10min可杀灭多数细菌芽胞","物品需全部浸人水中，相同的容器应重叠放在一起","橡胶类物品在冷水中或温水中放人","中途加入其他物品，需等再次水沸后计时","在水中加入亚硝酸钠可提高杀菌效果"]
试述心理购买动机的构成与特点？
