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【单选题】
实践是知识的母亲,知识是生活的明灯。这句谚语的哲学寓意是()A.
学习知识比实践更重要
B.
在实践基础上形成的正确认识能够更好的指导实践
C.
有时实践比认识重要，有时知识比实践重要
D.
知识既源于书本，又源于实践
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【单选题】Without doubt the radar is a highly important navigation aid. But duty officer shall aware that___ __when using it.
A.
Its range reading is more accurate than its bearing reading
B.
A low-lying coastline with a long, flat beach will show up properly on the radar
C.
Radar is only aimed at collision avoidance.
D.
The use of radar is necessary only when visibility is restricted.
【单选题】——How are you managing to do your work without
A.
28.——How are you managing to do your work without anassistant? ——Well ， I ______somehow. （重庆） A.getalong
B.
come on
C.
watchout
D.
set off
【简答题】without doubt
【单选题】Unbelievable as it is, the film 2012 without doubt________ a warning that human beings are faced with potential dangers
A.
belongs to
B.
serves as
C.
exists in
D.
accounts for
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