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【单选题】
The slow speed main propulsion diesel usully operates on ____.A.
the four stroke cycle
B.
the four-stroke cycle
C.
the two stroke cycle
D.
the two-stroke cycle
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【简答题】解释下列词语 远上: 寒山: 石径: 斜: 生: 坐: 枫林晚: 霜叶:
【单选题】板框式过滤机进行恒压过滤时，若洗涤时间和辅助时间之和一定，存在最佳过滤时间的合理解释是（ ）。
A.
过滤时间变长，所得滤液量增大，但过滤阻力也增大
B.
过滤时间变长，所得滤液量增大，也需要更长的洗涤时间
C.
过滤时间变长，所得滤液量增大，但整个操作周期也变长
D.
过滤时间变长，所得滤液量增大，也需要更长的辅助时间
【单选题】What does the author say about people's sleeping habits?
A.
They are culture － related.
B.
They affect people's health.
C.
They change with the seasons.
D.
They vary from person to person.
【单选题】板框式过滤机进行恒压过滤时，若洗涤时间和辅助时间之和一定，其生产能力与过滤时间的关系是（ ）。
A.
过滤时间越长，生产能力越大
B.
过滤时间越短，生产能力越大
C.
过滤时间与生产能力没有关系
D.
那三个说法都不正确
【单选题】What was Goodall’s childhood dream? ________
A.
She dreamed of going to college.
B.
She dreamed of studying animals in Africa.
C.
She dreamed of becoming a scientist.
D.
She dreamed of traveling all around the world.
【简答题】小题1:My sister likes candy very much, but she never brushes her teeth after eating it. 小题2:I have asked my uncle to stop smoking many times, but it did not work. 小题3:Tony always goes to sleep after...
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