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【单选题】
下列说法中正确的是A.
H 2 O 分子的偶极矩比 NH 3 分子的偶极矩大 ; (B) 没有电子的空的原子轨道不能参加杂化
B.
没有电子的空的原子轨道不能参加杂化
C.
ψ n,l,m,ms 表示一个原子轨道
D.
F 原子的 2p 轨道和 Cl 原子的 2p 轨道能量不相等
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【简答题】如果定时器控制器寄存器TCON中的IT1和IT0位为1，则外部中断请求信号方式为（）触发方式。
【单选题】听力原文： Sierra Leonean rebels and a progovernment militia have agreed to stop fighting in a bid to protect the country's shaky cease-fire and set a timetable for disarmament. The agreement comes on the ...
A.
ten-year
B.
eight-year
C.
eleven-year
D.
twenty-year
【单选题】The militia is a ________________ organization.
A.
quasi-victory
B.
quasi-military
C.
quasi-science
D.
quasi-office
【单选题】Why was Paul Sadala, the leader of DRC militia, pursued?
A.
Because he was the leader of a militia that attacked a conservation project.
B.
Because he was responsible for the death of some rare animals.
C.
Because he murdered six soldiers of a rival militia.
D.
Because he protested violently against the wildlife slaughter.
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