As can be gathered from the passage, before 1910 the normal running time of a film was probably ______. A．15 minutes or less B．between 15 and 30 minutes C．between 30 and 45 minutes D．1 hour or more
举一反三
- A helicopter making a round trip from a helideck with refueling capabilities to an unmanned platform will take 45 minutes each way. The helicopter should be carrying enough fuel to last（）. A: 45 minutes B: 1 hour and 15 minutes C: 1 hour and 30 minutes D: 2 hour
- Your job interview is scheduled for 9 a.m. What time should you arrive? A: 1 minute before the interview begins. B: 30 minutes before the interview begins. C: 45 minutes before the interview begins. D: 10 minutes before the interview begins.
- You will be placed with a local family usually within _____ from your campus. A: 20 to 45 minutes B: 15 to 35 minutes C: 15 to 40 minutes D: 25 to 40 minutes
- How many minutes ofConcrete mixed in stationary mixers and transported by non-agitating equipment shall be pay? A: 30 minutes B: 20 minutes C: 40 minutes D: 15 minutes
- What is the recommended amount of time spent on cleaning A: 5 minutes B: 10 minutes C: 15 minutes D: 20 minutes