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【简答题】
如图,在△ABC中,∠C=90°,AC=5,BC=12,则△ABC周长=______.
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【简答题】Electric bicycles which run on battery-operated (电瓶) motors are winning over riders of ordinary bikes 41 their speed, quality and environmental advantage. They were first 42 on 1980s in China, but the...
【简答题】v There are various of engine such as electric motors, steam engines and internal combustion engines. However, the internal combustion engine seems to be the one most commonly used in the automotives ...
【单选题】计算机网络按照覆盖范围可分为 A 、城域网和广域网。
A.
局域网
B.
以太网
C.
通信网
D.
电话网
【判断题】All-electric vehicles are also called battery electric vehicles ( BEVs ), Battery-only electric vehicles ( BOEVs ),and full electric vehicles(FEVs). They use electric motors, motor controllers and in...
A.
正确
B.
错误
【简答题】As one of our s is interested in your electric motors, you are kindly requested to make us a firm ______ for 10 sets of the above mentioned goods for shipment in September.
【简答题】Belts are frequently necessary to reduce the higher rotative speeds of electric motors to the lower values required by mechanical equipment.
【简答题】There are various types of engines such as electric motors, steam engines, internal combustion engines and hybrid engines.
【判断题】计提坏帐准备将引起经营活动现金流量的增加。( )
A.
正确
B.
错误
【简答题】Electric motors are made in several designs, among which are , , servo, and .
【单选题】Suppose the following chart illustrates the domestic prices of three items (shoes, watches, and electric motors) of similar quality in the United States and Mexico.Items United States (dollars) ...
A.
shoes and watches, and the United States will import electric motors.
B.
shoes, and the United States will import watches and electric motors.
C.
all three goods from the United States.
D.
electric motors, and the United States will import shoes and watches.
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