单项选择题

A．Generator malfunction.
B．Computer error.
C．A collision with another station.
D．All the abov
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单项选择题
A．Nobody.B．Muslim militants.C．An Islamic organization.D．The Algerian government.
A．Nobody.
B．Muslim militants.
C．An Islamic organization.
D．The Algerian government.
单项选择题
A．It has lost its primary oxygen sources.B．It has lost its backup oxygen sources.C．It has lost both the primary and the backup oxygen sources.D．It has lost neither the primary or the backup oxygen sources.
A．It has lost its primary oxygen sources.
B．It has lost its backup oxygen sources.
C．It has lost both the primary and the backup oxygen sources.
D．It has lost neither the primary or the backup oxygen sources.
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