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【单选题】
在车床上最适于加工的零件是A.
平板类
B.
轴类
C.
轮齿
D.
箱体类
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举一反三
【单选题】According to the passage, through which of the following does the energy released in the Sun pass be fore it becomes light?
A.
The x-ray part of the spectrum.
B.
Electromagnetic space.
C.
The solar surface.
D.
Interplanetory space.
【单选题】某污水处理建设项目需采购一批设备 ， 按照规定必须进行招标采购的的标准是单项合同估算价在
A.
48 ． 某污水处理建设项目需采购一批设备 ， 按照规定必须进行招标采购的的标准是单项合同估算价在（ ）万元人民币以上。 A ． 50
B.
． 100
C.
． 150
D.
． 200
【单选题】Which of the following is true of the tubular fluid that passes through the lumen of the early distal tubule in the region of the macula densa?
A.
It is usually hypotonic
B.
It is usually isotonic
C.
It is usually hypertonic
D.
It is hypertonic in antidiuresis
E.
It is hypertonic when the filtration rate of its own nephron decreases to 50% below normal
【单选题】Which of the following forms of energy is demonstrated through the process of combustion?
A.
Chemical energy
B.
Mechanical energy
C.
Thermal energy
D.
Electrical energy
【单选题】Through which of the following can't unhappiness come according to the author?
A.
Fear.
B.
Vain.
C.
Unlimited desires.
D.
Natural desires.
【单选题】Which of the following is true of the tubular fluid that passes through the lumen of the early distal tubule in the region of the macula densa?
A.
It is usually isotonic
B.
It is usually hypotonic
C.
It is usually hypertonic
D.
It is hypertonic in antidiuresis
E.
It is hypertonic when the filtration rate of its own nephron decreases to 50% below normal
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