問題文
Two things go wrong on the same night. One automation types into a window that has not finished drawing yet, and another walks past a row whose amount column is empty and posts a blank figure. Which pairing of arrangements would have prevented each of those two?
選択肢
- Typing too early is prevented by the gateway step that the Wait package interposes, and posting the blank figure is prevented by the concurrency guard that the If package interposes for that organization.
- Typing too early is prevented by the lingering step that the Wait package interposes, and posting the blank figure is prevented by the vacancy guard that the If package interposes for that organization.
- Typing too early is prevented by the lingering step that the Wait package interposes, and posting the blank figure is prevented by the concurrency guard that the If package interposes for that organization.
- Typing too early is prevented by the gateway step that the Wait package interposes, and posting the blank figure is prevented by the vacancy guard that the If package interposes for that organization.