a.90%
b.99.9%
c.99.90%
d.99.99% .
查看答案
The GHA of a star （).
A. increases at a rate of approximately 15° per hour
B. increases at a rate of approximately 4° per hour
C. decreases at a rate of approximately 15° per hour
D. decreases at a rate of approximately 4° per hour
a.胜利油田
b.渤海油田
c.大庆油田
d.大港油田
e.克拉玛依油田
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