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【简答题】
患者女性，20岁。发热伴咽喉疼痛7天，随后出现膝、腕、踝关节疼痛而来就诊。查体：咽部红，扁桃体Ⅱ度肿大，心肺未见异常，右膝关节红肿，压痛明显，活动受限。实验室检查：白细胞 ，“0”＞500，血沉50mm/h。其诊断是（ ）
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举一反三
【单选题】In a closed cooling water system, which of the problems can cause the water pressure to fluctuate?
A.
An open vent in the cooling system
B.
A fouled sea chest
C.
A restricted water passage in the engine
D.
Air entrained in the cooling water
【单选题】The highest pressure in any closed diesel engine freshwater cooling system is at the _____.
A.
jacket water outlet
B.
expansion tank inlet
C.
heat exchanger inlet
D.
cooling water pump outlet
【判断题】Returns can only be measured in accounting terms such as return on assets, return on equity, or return on sales.
A.
正确
B.
错误
【简答题】Our Sales Confirmation No．BC510 ______ two originals were airmailed to you．Please sign and return one copy of them ______ our file.
【单选题】If the coolant temperature of a closed cooling water system for a diesel enginegradually increases, the trouble usually is( ).
A.
a broken shaft on the freshwater pump
B.
an excessive accumulation of scale in the heat exchanger
C.
an incorrect thermostatic element operating range
D.
lube oil in the cooling water
【简答题】Our sales confirmation No． BC510 in two (8) were airmailed to you． Please sign and return one copy of them for our (9) ．
【单选题】In any diesel engine closed freshwater cooling system, the lowest pressure exists at the _____.
A.
jacket water outlet
B.
cooling water pump outlet
C.
heat exchanger outlet
D.
expansion tank atmospheric vent
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