中国大学MOOC: 对以下代码片段作用的最准确描述是（ ） try { wx.removeStorageSync(key)} catch (e) { // Do something when catch error}

下列是全局变量的是（）。 A: @error B: @@error C: !error D: error（）

You own a table called EMPLOYEES with this table structure: EMPLOYEE_ID NUMBER Primary Key FIRST_NAME VARCHAR2(25) LAST_NAME VARCHAR2(25) HIRE_DATE DATE What happens when you execute this DELETE statement? DELETE employees;（） A: AYou get an error because of a primary key violation. B: BThe data and structure of the EMPLOYEES table are deleted. C: CThe data in the EMPLOYEES table is deleted but not the structure. D: DYou get an error because the statement is not syntactically correct.

对以下代码片段作用的最准确描述是（ ）try { wx.removeStorageSync('key')} catch (e) { // Do something when catch error} A: 从本地缓存中异步移除指定 key B: 从本地缓存中同步移除指定 key C: 异步清空本地数据缓存 D: 同步清空本地数据缓存

The following is not the geometric error of machining process system (). A: machining principle error B: geometric error of machine tool C: adjustment error D: tool manufacturing error

下列不属于VBA提供的On Error语句形式为()。 A: On Error Goto标号 B: On Error Then 标号 C: On Error Resume Next D: On Error Goto 0

The following is the machining principle error () . A: approximate profile error of forming tool B: spindle revolving error of machine tool spindle C: guide error of machine tool D: fixture error

以下程序的输出结果是:a =10b =1try:c=b//(b/a)print(except (IOError ,ZeroDivisionError):print( " calculation error" )else:print(" no error" )} A: calculation error B: no error C: 9.0 D: 9.0no error

VBA中不能进行错误处理的语句是（ ）。 A: On Error Got0标号 B: On Error Then标号 C: On Error Resume Next D: On Error Got0 0

VBA中不能进行错误处理的语句是( )。 A: On Error Goto标号 B: On Error Then标号 C: On Error Resume Next D: On Error Goto 0