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【简答题】
制冷剂是空调系统中的“热载体”,俗称“”,它有哪些种类?
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】脾中度肿大是指( )
A.
深吸气时,脾下缘在左侧肋下缘不超过3cm
B.
脾下缘在左侧肋缘以下
C.
脾下缘在左侧肋下缘不超过5cm
D.
脾下缘在左侧肋下缘3cm至脐水平线之间
E.
脾下缘超过脐水平线
【单选题】In para. 4 the author uses an example to show______.
A.
what a low concentration of oxygen-carrying red cells will do
B.
the serious consequence of imbalance of the blood
C.
how a low concentration of white cells reduce the body's ability to fight infection
D.
how the red cells to carry oxygen to every part of body
【单选题】______ the cold, thin air and low oxygen levels also can cause mountain sickness.
A.
On behalf of
B.
Apart from
C.
In terms of
D.
Except for
【简答题】脾轻度肿大是指（），中度肿大是指（），重度肿大是指（）。
【简答题】A．Lack of oxygen. B．Overgrowth of water plants. C．Low water level. D．Serious pollution upstream.
【单选题】Which of the following means low oxygen?
A.
anoxia
B.
aphasia
C.
hypoxia
D.
hydrocele
【单选题】What did the seven Russian submariners suffer from?
A.
A lack' of oxygen and low temperature.
B.
Heavy fever.
C.
Faint and headache.
D.
Hunger and cold.
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