题干

如果他把金属盒放入10厘米深处的盐水中。你推测压强计左右水面高度差将____ 9.2厘米(填“大于”、“小于”或“等于”)。其理由是____ 。

上一题 下一题 0.0难度 选择题 更新时间:2015-10-10 06:00:10

答案(点此获取答案解析)

大于,液体同一深度时,密度大的液体压强大

同类题5

阅读理解

    Bike Share Toronto is the city's official bike share program, designed to give locals and visitors a fun, affordable and convenient alternative to walking taxis, buses and the subway. There are 200 Bike Share Toronto stations and 2,000 bikes across the city, making Bike Share the most accessible way to get around and explore.

    How it works

    Become an Annual Member or buy a day Pass to access the system.

    Find an available bike nearby, and get a ride code or use your member key to unlock it.

    Take as many short rides as you want while your pass or membership is active.

    Return your bike to any station, and wait for the green light on the dock(停靠点) to make sure it's locked.

    Choose a plan

    For Visitors

    Day Pass: $7. Unlimited 30-minute rides in a 24-hour period.

    3-Day Pass: $15. Unlimited 30-minute rides in a 72-hour period.

    For locals

    Monthly Pass: $25. Unlimited 30-minute rides for a month.

    Annual Membership: $90. Unlimited 30-minute rides for a whole year. The Annual Membership is the best deal for locals of Toronto and other frequent riders.

    The fee of the first 30 minutes of each ride is included with the membership or pass price. Don't charge extra fees if you drop off your bike within 30minutesatany other station. If you keep a bike out for longer than 30 minutes a time, you will be charged an extra fee, $1.50 for the first extra 30 minutes, $4 for the next 30 minute, and $7 for each additional 30 minutes after that.

    Contact us

    Customer Service: (855)898-2388

    Repair Service: (855)-2378

    Corporation Partners: (855)898-2398

    Employment Opportunities:(855)898-2498