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【简答题】
n. 小路,跑道,踪迹,轨道,乐曲 v. 跟踪
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举一反三
【简答题】直径为200mm，长度为300m的管道自水库引水，在B点分为两根直径150mm，长度为150m的叉管，二叉管均出流至大气，其中一根叉管有沿其全长均匀分布的泄水孔，进入此叉管的流量有一半从管道末端流出，另一半则通过泄水孔沿程泄出；二分叉管的出口均位于水库水面以下15m。求各分叉管的流量，取沿程阻力系数λ=0.024，不计局部水头损失。
【简答题】如图所示长为L、直径为d的沿程连续均匀泄流管道AB，进口流量为Q，单位长度沿程泄流量为q(常量)，末端流量尚剩1/2，管道末端断面中心位于进水口前水面以下H处，沿程阻力系数沿程不变，试证沿程水头损失为 式中：v为相当于流量Q时的平均流速。
【单选题】sectionA-4.mp3:
A.
The machine works well.
B.
The machine costs too much.
C.
The woman wants to get her money back
D.
The woman is making a complaint.
【单选题】SectionA-4.mp3:
A.
He is nice and kind.
B.
He is good at programming.
C.
He is suitable for the job.
D.
He finds the job difficult.
【单选题】There is _____worong with this computer. It doesn’t work well.
A.
something
B.
anything
C.
everything
D.
nothing
【单选题】Section A sectionA-Directions.mp3: Directions: This section is to test your ability to understand short dialogues. There are 5 recorded dialogues in it. After each dialogue, there is a recorded questi...
A.
Buy a less expensive car.
B.
Borrow money from the bank.
C.
Make a price comparison.
D.
Wait until the price goes down.
【简答题】压电式传感器不适合用于 力测量（填写静态或动态）。
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