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【单选题】
面对突发灾难,逃生方法正确与否与逃生成功率密切相关,应对不当,往往付出生命代价,在高层遇到火灾时,下列做法中不正确的是( )A.
湿毛巾封死门缝等待救援
B.
快速进入电梯下行逃生
C.
弯腰低头顺楼梯往下奔跑
D.
用湿毛巾捂住口鼻呼吸
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【简答题】观察判定下列变量当 时为无穷小: (1) ; (2) ; (3)
【单选题】He wouldn't leave the TV set,_______ he was going to have an exam the next day. [ ]
A.
even if
B.
as if
C.
as though
D.
even
【简答题】,当 时为无穷大,当 时为无穷小.
【单选题】下列关于葡萄糖磷酸化的叙述中,错误的是
A.
己糖激酶催化葡萄糖磷酸化的过程需要Mg2+
B.
己糖激酶催化葡萄糖磷酸化的过程基本上不可逆
C.
己糖激酶受激素调控
D.
磷酸化后的葡萄糖能自由通过细胞膜
E.
己糖激酶同工酶主要有四型,其中肝细胞中主要是Ⅳ型
【单选题】He wouldn’t leave the TV set, ________ he was going to have an important exam the next day.
A.
even if
B.
as if
C.
as though
D.
even
【单选题】Though this was his most unfortunate time in his life , he was still__________ his goal. [ ]
A.
going out of one's way
B.
having it both ways
C.
mending; his ways
D.
making his way to
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