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给水方式, 供水可靠,无高位水箱,但由于是气压泵送,效率相对低、并且耗能多。适用场所:外网水压不能满足所需水压,用水不均匀,且不宜设水箱时采用。
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【简答题】_______ of the twin sisters works as a waitress in that restaurant. [ ] A . Both B. All C. Neither D. None
【简答题】中国近现代史的主题和主线是什么? 请聚焦中国近现代史的主题和主线, 结合这场疫情中你的思考, 给出你在本课程学习中最想讨论的2-3个主题/问题。
【单选题】—Which of the twin sisters is a doctor? —_________ are. [ ]
A.
All
B.
Both
C.
Either
D.
Neither
【单选题】How are the twin brothers? They are _____ fine. [ ]
A.
all
B.
both
C.
either
D.
neither
【单选题】A vessel is equipped with twin propellers，both turning outboard with the engines half ahead.If there is no wind or current and the rudders are amidships，what will happen?
A.
The bow will swing to starboard
B.
The bow will swing to port
C.
The vessel will steer a zigzag course
D.
The vessel will steer a fairly straight course
【单选题】Best Graphics is considered to be chosen to both design _______produce our advertising brochures for the upcoming season.
A.
but
B.
neither
C.
and
D.
either
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【单选题】—Which of the twin sisters is a doctor? —_________ are. [ ]
A.
All
B.
Both
C.
Either
D.
Neither