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【单选题】
护士告诉慢性阻塞性肺气肿患者因为痰液黏稠，饮水，其原因是因为多饮水可以A.
补充出汗等所丢失的水分
B.
加速细菌排出
C.
加速毒素及分泌物排出
D.
降低出血性膀胱炎的发生
E.
促进痰液稀释而容易排出
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举一反三
【单选题】A piston in a four-stroke/cycle diesel engine makes four strokes during each _____.
A.
crankshaft revolution
B.
mechanical cycle of operation
C.
period of two combustion cycles
D.
cycle of two events
【单选题】In four strokes engine, the cycle of events is completed in four strokes of _____.
A.
the cylinder
B.
the crankshaft
C.
the piston
D.
the cross-head
【单选题】The four strokes are called suction, compression, expansion and exhaust, but only _____ stroke provides the power to drive the ship.
A.
suction
B.
compression
C.
expansion
D.
exhaust
【单选题】Four strokes consist of suction, compression,( ) and exhaust stroke
A.
cycle
B.
expansion
C.
scavenging
【单选题】For a character with some strokes completely enclosed onall four sides, first write _________.
A.
what is enclosed
B.
the enclosing strokes on the upper three sides
C.
the enclosing strokes on the upper two sides
D.
the sealing horizontal stroke at the bottom
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