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【单选题】
正常成人血糖浓度范围是A.
3.9—6.1mmol/L
B.
2.9—6.1mmol/L
C.
1.9—6.1mmol/L
D.
3.9—7.1mmol/L
E.
3.9-8.1mmol/L
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【单选题】In purification, there is no fuel oil in the clean oil outlet.It could be caused by _____. I.too high temperature of the dirty fuel oil; II. too low temperature of the dirty fuel oil; III. Clogged fil...
A.
I
B.
I.II.III
C.
II.III
D.
II
【单选题】Which one is not included in the water pollution purification materials?
A.
Redox material
B.
Precipitation separation material
C.
Solid liquid separation material
D.
Purification catalyst
【单选题】To receive oil residues from the purification of fuel and lubricating oils in the machinery spaces, what kind of tank(s) should be provided on board?
A.
bilge tank
B.
sludge tank
C.
overflow tank
D.
oil collecting tank
【简答题】城市道路有哪些功能？城市道路分为哪几类？
【单选题】In purification, light phase is escaping together with the heavy one. This indicates that ____.
A.
the bowl is clogged
B.
the liquid seal is broken
C.
the bowl is clogged, or the liquid seal is broken
D.
the throughput is too low
【简答题】城市道路分为几类 ?
【单选题】In purification, the separator should be checked the following items except that ______.
A.
The throughput is constant
B.
The working temperature is constant
C.
The oil does not leak from the worm gear housing
D.
The brake is released
【单选题】In purification, the separator should be checked the following items except that _____.
A.
the throughput is constant
B.
the working temperatures is constant
C.
the oil does not leak from the worm gear housing
D.
the brake is released
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