【单选题】It can be seen from the passage that ______.
A.
the capacity to generate electricity is the distinctive characteristic of the fish
B.
the current travels in an upward direction from the positive side to negative side in torpedo's electric cells
C.
some fish can produce enough electricity to drive a number of electric motors
D.
the torpedo' s electric cells have a shape with six sides
【单选题】There on the shore you can see a steam powered ship covered with dirt _____, waiting to be taken apart. [ ]
【单选题】对钢板进行热收缩时,首先应从哪个部位开始?
【单选题】Steam can generate electricity by turning an electric generator.
【多选题】博物馆藏品属于国有文物的,不得( )给外国人
【单选题】方案形成的正确顺序是①整理一套有力度的文件②制定详细的工作计划③进行关键分析④消除非关键问题⑤分解问题⑥综合结果并建立有结构的结论⑦陈述问题
【单选题】内封式堵漏袋由防腐橡胶制成,工作压力大约为( )Mpa
【单选题】It can be inferred from the passage that by 1870 ______.
A.
the steam engine had been invented
B.
a national commission on agriculture had been established
C.
the U.S.horse population was about 10 million
D.
technology began to be more economical