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【简答题】
How Do We Transport Our Goods? Goods must be transported from where they are produced to where their consumers are. There are five major modes of transport for goods, namely, rail transport, water transport, road transport, pipeline transport and air transport. Each mode of transport is characterized by different carriers. Railroads carry an important part of the total freight. The advantage of rail transport lies in its ability to meet different needs. Railroads can carry the heaviest and the lightest products and can run at different speeds. For special types of goods railroads provide adapted cars. Thus for perishables refrigerator cars are used, for oil products there are tank cars, for different other materials dumper cars are used. The freight rates of railroads compare favorably with the other modes of transport. Waterway carriers offer a low-cost means of shipping bulky products which have a low transportation value in relation to weight. They are especially used when speed of transportation is not what matters the most. Container ships are commonly used for the transport of goods between countries. Ore-carriers are specially designed for transporting ore, while tankers are used for crude oil transport.
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举一反三
【单选题】Two men were injured when a police _________was forced to make an emergency landing.
A.
chute
B.
quake
C.
copter
D.
phone
【单选题】选择测量仪表量程的原则是被测量值不低于选用的仪表量程的(),而又不超过该仪表的最大量程。
A.
1/5;
B.
1/3;
C.
1/2;
D.
2/3。
【单选题】应用红外线烤灯治疗压疮,不正确的操作是
A.
首先评估患者情况
B.
暴露压疮部位
C.
灯距为20~30cm
D.
照射时间为20~30分钟
E.
注意防止烫伤
【单选题】使用红外线烤灯时,错误的操作是
A.
对患者的情况进行评估
B.
暴露治疗部位
C.
灯距为20~30cm
D.
时间为20~30min
E.
注意观察患者反应
【单选题】大量出汗后,不会引起机体
A.
失水
B.
失盐
C.
血浆渗透压降低
D.
血浆渗透压升高
【单选题】使用红外线烤灯时,错误的操作是
A.
对病人的情况进行评估
B.
暴露治疗部位
C.
灯距为20~30cm
D.
时间为20~30min
E.
注意观察病人反应
【单选题】1898年,()强租山东的胶州湾,把山东划为其势力范围。
A.
日本
B.
德国
C.
英国
D.
俄国
【判断题】选择仪表的量程的原则是:被测值不低于仪表选用量程的2/3,而又不超过仪表的最大量程。
A.
正确
B.
错误
【单选题】红外线烤灯治疗时间为:
A.
10-15分钟
B.
15-20分钟
C.
30-50分钟
D.
20-30分钟
E.
30-35分钟
【判断题】选择仪表量程的原则是:被测量值不低于仪表选用量程的2/3,而又不超过仪表的最大量程。
A.
正确
B.
错误
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