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【单选题】
PART C Directions: You will hear three dialogues or monologues. Before listening to each one, you will have 5 seconds to read each of the questions which accompany it. While listening, answer each question by choosing A, B, C or D. After listening, you will have 10 seconds to check your answer to each question. You will hear each piece ONLY ONCE. 听力原文: When you're preparing for a holiday, you should first and foremost make a list of all the documents you'll need. Your list should include the following things: passport -- make sure that this is current, visa -- check the visa requirements for the countries you're visiting, tickets, travel insurance certificate, foreign currency anti traveler's cheques. You'll also need your driving licence if you plan to rent a car. Tip1: It's vital to arrange travel insurance for your trip and your travel agent will probably offer it to you when you hook. If you lose your baggage or your money, or if you need medical attention while you're away, your travel insurance will help to meet the costs. But be warned, if you're planning a skiing holiday you'll have to pay an additional insurance premium. Tip2: It's not a good idea to travel with large amounts of cash. Only carry the amount you'll need for day-to-day expenses such as taxis, bus fares, and food. Traveler's cheques are a far safer way of carrying money round because you can get a refund if you lose them or if they're stolen. You'll need to order them from your bank in advance, and remember that banks abroad will charge a small commission when you cash them. Tip3: If you're hoping to do some sightseeing, it's best to buy a guidebook before you go, otherwise you may have to pay for something which is badly translated and barely understandable. If you don't speak the language, take a phrase book as well -- it could be very useful if you get into difficulties and may help to break the ice with the locals. Tip4: When you're packing, be careful to stick to the airline's baggage allowance or you'll have to pay for the excess weight when you check in. Don't put aerosol sprays in your case, and make sure any sharp objects, like scissors, are carefully wrapped. Two useful pieces of equipment to take with you are an all-purpose adaptor and a light traveling iron. Tip5: If you are flying a long distance, there are a few things you can do to reduce the effects of jet-lag. Before you leave, try to adapt your eating and sleeping habits to the time zone you are traveling to. If you eat small amounts through the day, and try to sleep for short periods, it may be helpful. During the flight, walk around the cabin from time to time and drink plenty of water to cut down dehydration which causes exhaustion. Which of the following is NOT mentioned as the thing included in your list?
A.
Visa.
B.
Passport.
C.
Foreign currency.
D.
Food.
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【多选题】如图所示,一个固定在竖直平面内的光滑半圆形管道,管道里有一个直径略小于管道内径的小球,小球在管道内做圆周运动,从 B 点脱离后做平抛运动,经过 0.3 s 后又恰好与倾角为 45° 的斜面垂直相碰 . 已知半圆形管道的半径为 R = 1 m ,小球可看做质点且其质量为 m = 1 kg , g 取 10 m / s 2 . 则 ( )
A.
小球在斜面上的相碰点C与B点的水平距离是0.9 m
B.
小球在斜面上的相碰点C与B点的水平距离是1.9 m
C.
小球经过管道的B点时,受到管道的作用力NB的大小是1 N
D.
小球经过管道的B点时,受到管道的作用力NB的大小是2 N
【单选题】如图所示,竖直 向下的匀强磁场穿过光滑的绝缘水平面,平面上一个钉子 O 固定一根细线 ,细线的另一端系一带电小球,小球在光滑水 平面内绕 O 做匀速圆周运动 . 在某时刻细线断开,小 球仍然在匀强磁场中做匀速圆周运动,下列说法一定错误的是
A.
速率变小,半径变小,周期不变
B.
速率不变,半径不变,周期不变
C.
速率不变,半径变大,周期变大 [
D.
速率不变,半径变小,周期变小
【单选题】工件图样采用包容要求时,应在其尺寸极限偏差或公差代号后加注符号( )。
A.
M
B.
L
C.
E
D.
R
【单选题】按照借贷记账法的记录方法,下列账户中,账户的贷方登记增加额的是( )
A.
库存现金
B.
应收账款
C.
应付账款
D.
原材料
【多选题】(选做)如图所示,一个固定在竖直平面上的光滑半圆形管道,管道里有一个直径略小于管道内径的小球,小球在管道内做圆周运动,从 B 点脱离后做平抛运动,经过 0.3 s 后又恰好垂直与倾角为 45 °的斜面相碰.已知半圆形管道的半径为 R = 1 m ,小球可看做质点且其质量为 m = 1 kg , g 取 10 m/s 2 . 则 ( )
A.
小球在斜面上的相碰点 C 与 B 点的水平距离是 0.9 m
B.
小球在斜面上的相碰点 C 与 B 点的水平距离是 1.9 m
C.
小球经过管道的 B 点时,受到管道的作用力 F N B 的大小是 1 N
D.
小球经过管道的 B 点时,受到管道的作用力 F N B 的大小是 2 N
【多选题】如图所示,在竖直平面内固定两个很靠近的同心圆轨道,外圆内表面光滑,内圆外表面粗糙.一质量为m的小球从轨道的最低点以初速度 向右运动,球的直径略小于两圆间距,球运动的轨道半径为R,不计空气阻力.下列说法正确的是( )
A.
若 ,则小球在整个运动过程克服中摩擦力做功等于mgR
B.
若使小球在最低点的速度 大于 ,则小球在整个运动过程中,机械能守恒
C.
若小球要做一个完整的圆周运动,小球在最低点的速度 必须大于等于
D.
若小球第一次运动到最高点,内环对小球的支持力为0.5mg,则小球在最低点对外圆环的压力为5.5mg
【判断题】正确连接空气质量传感器与电压电流变送器之间的信号线;
A.
正确
B.
错误
【多选题】汉语拼音的教学方法包括哪些?
A.
发音示范法
B.
图片演示法
C.
动作表演法
D.
比较法
E.
游戏法
F.
歌诀法
【单选题】工件图样采用包容要求时,应在其尺寸极限偏差或公差代号后加注符号( )。
A.
M
B.
L
C.
E
【单选题】按照借贷记账法的记录方法,下列项目中,记录在账户贷方的是()
A.
费用的增加额
B.
收入的增加额
C.
负债的减少额
D.
所有者权益的减少额
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