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【单选题】
关于脑血栓形成的临床表现,叙述不正确的是A.
情绪激动、活动过度、用力排便时发生
B.
可有头痛、眩晕、肢体麻木等先兆
C.
多发生于有动脉硬化、糖尿病、高脂血症的老年人
D.
常表现出各种类型的偏瘫
E.
发病时意识清楚或有轻度的意识障碍
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举一反三
【简答题】A heat exchanger allows a hot fluid to transfer heat energy to a cooler fluid through ______________ and _______________ . A heat exchanger provides heating or cooling to a process.
【单选题】第二组 The only attention that heat exchanger should require is to ensure that the heat transfer surfaces remain substantially clean and the flow passages generally clear of obstruction. Indication that ...
A.
the heat exchanger lube oil inlet temperature lowering
B.
the heat exchanger sea-water outlet pressure rise
C.
the heat exchanger temperature difference between lube oil and sea water increasing
D.
the heat exchanger pressure difference between sea water inlet and outlet decreasing
【简答题】heat exchanger
【单选题】The type of heat exchanger that involves the alternate passage of the hot and cold fluid streams through the same flow area is the heat exchanger.
A.
regenerative
B.
compact
C.
plate and frame
D.
shell-and-tube
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