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You should read the material carefully and do the tasks as you are required.To make your driving experience in the United States safe and enjoyable, our company is providing you with this “Rules of the Road” pamphlet. Please note, however, that this pamphlet does not represent a complete list of the motor vehicle and traffic laws of the various states. Regardless of whether or not a specific law is outlined below, it is your responsibility as the driver to follow all applicable (适合的) motor vehicle and traffic laws. Do Not Drink and Drive! Each state strictly prohibits Driving While Drunk. Wear Seatbelts-It’s the Law! Also, the use of child seats for babies and small children ( usually under age 5) is required to stay in all states. Place child seats in the back seat only. Stay to the Right In the United States, motor vehicles are operated on the right hand side of the road. Be extremely careful to stay to the right at all times- especially if you are from a left-hand drive country. Obey the Speed Limit In most states, the maximum highway speed is 65 miles per hour (mph) in rural areas and 55 mph in urban (市区的) areas. Speed limits on secondary roads and in cities and towns are usually significantly lower, generally 30 mph and even lower in school zones. Stop for School Buses Traffic approaching in both directions must stop for a school bus while its red lights are flashing.#The purpose of the “ Rules of the Road” pamphlet is to .
A.
provide a full list of traffic laws and regulations in the US
B.
help drivers to enjoy safe and pleasant driving in the US
C.
tell drivers to avoid dangerous roads in various states
D.
show drivers the different road signs in all the states
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由固体熔化成液体的温度
B.
熔融同时分解的温度
C.
供试品在毛细管中收缩时的温度
D.
固体熔化时自初熔至全熔时的一段温度
E.
供试品在毛细管中开始局部液化时的温度
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正确
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错误
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右心室
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左心室
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A.
左心房
B.
右心室
C.
左心室
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升主动脉
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右心房
【单选题】在胸部后前位X线片上右心下缘的影像构成为( )
A.
左心房
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右心室
C.
右心房
D.
左心室
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A.
69 ℃ , 46 ℃
B.
69 ℃ , 45 ℃
C.
96 ℃ , 50 ℃
D.
96 ℃ , 40 ℃
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A.
去氧Hb含量大于50g/L血液时,可出现发绀
B.
严重贫血的患者易出现发绀
C.
高原性红细胞增多症时易出现发绀
D.
缺氧不一定都出现发绀
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A.
左心房
B.
右心室
C.
左心室
D.
升主动脉
E.
右心房
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