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【单选题】
液化气船发生气体泄漏，并引发火灾。现场负责人员采取的最好程序是：A.
先组织人员切断石油气的泄漏源，再扑救
B.
先组织人员扑救，再切断石油气的泄漏源
C.
既可先组织人员切断石油气的泄漏源，也可先组织人员扑救
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Everyone has periods in their lives ______ everything seems very hard.
A.
when
B.
where
C.
which
D.
That
【单选题】Everyone has periods in their lives__________everything seems so hard.
A.
when
B.
where
C.
which
D.
that
【单选题】Everyone has periods in their lives ______ everything seems very hard.
A.
when
B.
where
C.
which
D.
that
【单选题】In my opinion, everyone has periods in their lives _______ everything seems very hard.
A.
when
B.
where
C.
which
D.
that
【简答题】Everyone has periods in their lives _______ everything seems so hard.
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