营销活动的5W1H原则中5W指的是（）。 A: AWHEN B: BWHY C: CWHERE D: DWHAT

I don’t know（）. A: Awhen will our ship sail B: Bwill when our ship sail C: Cwhen our ship will sail D: Dwill our ship when sail

Identify two situations in which the block header grows in a data block. （） A: Awhen row directories need more row entries B: Bwhen there is row migration in the data block C: Cwhen there is an increase in the PCTFREE value for the data block D: Dwhen more transaction slots are required than are initially configured