确保两次启动之间的时间至少间隔 30 秒。
A: Make sure that the time between starts is a minimum of 30 seconds.
B: Check that 30 seconds have elapsed between starts.
C: Check that 30 seconds have timed between starts.
A: Make sure that the time between starts is a minimum of 30 seconds.
B: Check that 30 seconds have elapsed between starts.
C: Check that 30 seconds have timed between starts.
举一反三
- 检查约束中，要求价格大于20，表达式为（）。 A: …… check (price >20) B: …… check (price <30) C: …… check (price between 20 and 30) D: 都不是
- Endotracheal aspiration should be limited to :() A: within 2 seconds B: within 5 seconds C: within 10 seconds D: within 20 seconds E: within 30 seconds
- 测量（两个）表面之间的距离。 A: Make sure of the distance between the faces. B: Check the distance between the faces. C: Confirm the distance between the faces. D: Ensure the distance between the faces.
- The correct statement of the transition attribute is（ ） A: transition-duration sets when the transition effect starts B: transition-duration sets how many seconds or milliseconds the transition effect takes C: transition-delay sets when the transition effect starts D: transition-delay sets how many seconds or milliseconds the transition effect takes
- Check the _________. The first class starts at 10 a.m.