The time of useful consciousness while cruising at an altitude of 30,000 feet and sitting quietly would be about（ ）
举一反三
- The average time of useful consciousness when engaged in moderate activity following a rapid decompression at 42,000 feet is closest to
- What time would they meet on Sunday A: About6:30 or 7:00. B: About 7:30. C: About6:00.
- He told me to rest for a while. He told me to rest ______. A: quietly B: for a short time C: while he spoke to me D: for a long time
- My parents , if ______ the opportunity, would freely talk about their problems while______ in my waiting room. A: given, sitting B: given,sat C: giving,sitting D: giving, sat
- Without the friction between their feet and the ground, people would in no _______ be able to walk. A: time B: means C: way D: account