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

The video one borrowed must be returned ______. A: within a month B: within two weeks C: within one week D: within five days

Hong long must the computer repair be done? A: Within the week. B: Within 24 hours. C: Within 14 hours. D: Within 2 days.

At the end of the video, the lady said when will she get back to the man? A: within 1 hour B: within 1 quarter C: within 1 day D: within 1 minute

---Where is the nearest hospital?- Not very far. It is _________. A: within an hour’s flying time B: within 10 minute’s walk C: within 5 minutes’ drive D: within 10 minutes walk

30.very low birth weight infant(VLBW) means: A.weight within 1 hour after birth <1.5kgB.weight within 1 hour after birth <kgC.weight within 1 hour after birth <2.5kgD.weight within 1 hour after birth <1kg A: A.weight within 1 hour after birth <1.5kg B: B.weight within 1 hour after birth <kg C: C.weight within 1 hour after birth <2.5kg D: D.weight within 1 hour after birth <1kg

How long is the flu patient most contagious after the onset of illness? A: Within 24 hours B: 2-3days C: Within a week D: Within two weeks

14. One of the features of auto-immune diseases is that they ________ within individuals and sometimes within an individual's family.

smoking within the vicinity

within the European Union.