单项选择题
Which of the following tasks is not performed by the job coordinator?（）
A. Update job log when a job completes B. Spawn and remove job slaves C. Write/read job info to/from memory cache D. Query job table E. Pass job information to job slaves
单项选择题 Which of the following calendaring syntax expressions would evaluate to the last day of every month?（）
单项选择题 Consider the following code snippet: If this code were executed, which of the following statements would be true?（）
多项选择题 WhichtwostatementsaretrueregardingtheORDERBYclause?（）
