【单选题】Steamboat decks teemed not only with themain current of pioneeringhumanity, but its flotsam ofhustlers, gamblers, and thugs as well. (Para. 5)What kind of figure of speech has been usedin this sentenc...
【单选题】三相四线制供电线路中,若线电压为380伏,则相电压为( )。
【单选题】家长教育子女没有固定的教育模式,教育场所和教育时间也不固定,这体现了家庭教育的性质是( )
【单选题】()hasn’t ’tween decks.
【简答题】When did the steamboat 'New Orleans' make its first trip? In ______.
【单选题】根据GB3469-83《文献类型与文献载体代码》规定,文后参考文献著录时专利用字母( )标识。
【单选题】What is the passage mainly about?
A.
Steamboat engines in the western United States.
B.
River travel in the western world.
C.
The first steamboat engine was invented by Oliver Evans.
D.
The world's first practical steamboat.
【单选题】(During) the holidays, (every) train and (steamboat) (were) crowded.