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【单选题】
下列选项不属于电机驱动系统的作用是?A.
它是新能源汽车的核心技术之一
B.
按驾驶员的驾驶意图，将动力电池的化学能高效地转化为机械能
C.
提供汽车行驶所需要的电池能量
D.
经过变速器、驱动轴等机构驱动车轮
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Why is St. Petersburg called a 'floating city'?
A.
It is nearly surrounded by water.
B.
It has four islands.
C.
It is famous for its ship industry.
D.
It is a big island.
【单选题】在12月31日那天晚上到宾馆或饭店去庆贺对美国人来说已经越来越普遍。
A.
It has become more and more common for Americans to go to a hotel or restaurant.
B.
It has become more and more common to go to a hotel or restaurant.
C.
It has become common for Americans to go to a hotel or restaurant on the night of December 31st.
D.
It has become more and more common for Americans to go to a hotel or restaurant on the night of December 31st.
【简答题】测定配合力的方法?
【简答题】简述檩条的荷载和荷载组合,并说明如何对檩条进行截面选择?
【单选题】It has been predicted that nanomaterials will become the most materials in the 21st century.
A.
potential
B.
expensive
C.
cheap
D.
controversial
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