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【简答题】
简述智能电网调度支持系统的一个基础平台，四大类应用及其主要功能分别是什么？
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皮皮学刷刷变学霸
举一反三
【单选题】He hadn’t seen his mother for a long time, so when he saw his mother he _____ crying.
A.
burst out
B.
burst into
C.
burst in
D.
burst on
【单选题】He hasn't seen his mother for five years. He is ______ forward ______ his mother at once. [ ]
A.
look; to see
B.
look; to seeing
C.
looking; to seeing
【单选题】He hadn't seen his mother for a long time, so when he saw his mother he ____ crying. [ ]
A.
burst into
B.
burst out
C.
broke out
D.
broke down
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