题干

汽车无论是不慎驶入水中还是遇雨被淹,乘客都应立刻开门逃生,水越深车门越难推开。如图所示,在车门下都距水面0.3米深的O处,水的压强为____帕。若车门在水下部分的面积为0.8米2,受到水的平均压强为5×103帕,此时车门所受水的压力为____牛,约相当于____千克(取整数)的水压在车门上,因此,建议汽车不慎驶入水中时,应立即设法从车内逃离,紧急情况下,应挥动逃生锤的____(填“A”或“B”)端砸向玻璃窗的边角,砸窗逃离。

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2.94×103,4×103,408,B

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A Guide to the University

Food

The TWU Cafeteria is open 7am to 8pm.It servessnacks, drinks, ice cream bars and meals.You can paywith cash or your ID cards.You can addmeal money to your ID cards at the Front Desk.Even if you donot buy your food in the cafeteria, you can use the tables to eat your lunch,to have meetings and to study.

If you are on campus in the evening or late at night, you canbuy snacks, fast food, and drinks in the Lower Café located in the bottom levelof the Gouglas Centre.This area isoften used for entertainment such as concerts, games or TV watching.

Relaxation

The Globe, located in the bottom level of McMillan Hall, isavailable for relaxing, studying, cooking, and eating.Monthlyactivities are held here for all international students.Hours are 10am to 10 pm, closed on Sundays.

Health

Located on the top floor of Douglas Hall, the Wellness Centre iscommitted to physical, emotional and social health.A doctor andnurse is available if you have health questions or need immediate medical helpor personal advice.The cost ofthis is included in your medical insurance.Hours areMonday to Friday, 9am to noon and 1;00 to 4;30pm.

Academic Support

All students have access to the Writing Centre on the upperfloor of Douglas Hall.Here,qualified volunteers will work with you on written work, grammar, vocabulary,and other academic skills.You can signup for an appointment on the sign-up sheet outside the door two 30–minuteappointments per week maximum.This serviceis free.

Transportation

The TWU Express is a shuttle(班车) service.The shuttletransports students between campus and the shopping center, leaving from theMattson Centre.Operationhours are between 8am and 3pm.Saturdays only.Round tripfare is $1.