The current law doesn't specify how many hours of practice new drivers have to complete.
Another innovation: a torque indicator showing how many hours of power were left before the spring would have to be rewound.
"I dread to think how many hours of my life I spent sitting in that corridor outside his office waiting for the nod to go in, " Hamilton told BBC Sport.
There are also varying guidelines about how many hours of training pilots must complete, below what altitude they should not hand over control of a plane and when they should abort landings.
How many hours of video have they watched?
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Industry analyst firms like Gartner, IDC, Aberdeen and others publish estimates of what an hour of downtime will cost the average company, and how many hours of downtime per year they are likely to experience.
But critics are worried that possible changes to "loosen up" the rules on providing for special needs pupils, which would mean local education authorities would not be required to be precise about how many hours of support pupils would receive, will mean less help for those who need it.
Learning about how many hundreds of hours Lochte spent at the pool, or how many pairs of shoes he has in his collection is fine.
Patients should also keep track of how many hours they typically spend focusing at each distance during the day.
Then it asks for type of vehicle, how many hours a day you expect to drive and estimated nightly hotel costs.
How many man hours are spent validating the source and validity of data in reports?
But how many of us even spend one or two hours a week focusing on our portfolios?
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There was much more at stake for them than there had been for the Groton grads of an earlier day. (How many hours do you think they put in doing homework?) College was a gate through which, once, only the favored could pass.
Taking a purely financial approach, Gartner Group examined how many extra hours per week workers on various salaries would have to work to recoup the extra cost of deploying notebooks.
It had been a few tough days of not really appreciating the art, architecture and history enough -- no matter how many hours I had devoted to museums.
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