当事件需要在当前时间过后20秒执行，则该时间的“ON SHCEDULE”表达式为（）
A: ON SCHEDULE 20 SECOND
B: ON SCHEDULE AT 20 SECOND
C: ON SCHEDULE AT CURRENT_TIMESTAMP +20 SECOND
D: ON SCHEDULE AT CURRENT_TIMESTAMP + INTERVAL 20 SECOND
A: ON SCHEDULE 20 SECOND
B: ON SCHEDULE AT 20 SECOND
C: ON SCHEDULE AT CURRENT_TIMESTAMP +20 SECOND
D: ON SCHEDULE AT CURRENT_TIMESTAMP + INTERVAL 20 SECOND
举一反三
- The second step of organizing a business visit is to _________. A: confirm the visitors’ information B: determine the visiting route C: arrange relevant people to receive visitors D: make a visiting schedule
- The aim of the second phase is to assess the current energy situation in China.
- Our train is already . I wonder whether we will be in time for Tom’s wedding. A: behind schedule B: ahead of schedule C: on schedule D: according to schedule
- But it is also true that stock prices are fairly ________ right now. A: acquired B: schedule C: previous D: reasonable E: current
- What kind of materials can be found on the second floor?Current magazines and_______.