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【判断题】
“化蝶”是梁祝故事发展到成熟、完美阶段而出现的点睛之笔A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【多选题】下列各项中,可根据判定企业是否处于保本状态的标志有()
A.
安全边际率为0
B.
贡献边际等于固定成本
C.
收支相等
D.
保本作业率为0
E.
贡献边际率等于变动成本率
【简答题】This is the reason. We need to make joint efforts to combat the disease for this reason.
【单选题】This is the reason ______ he didn't come to the meeting.
A.
in which
B.
with which
C.
that
D.
for which
【简答题】This is the reason ________ he was absent. This is the reason _______ can explain his absence.
【单选题】This is the reason ______he didn't come to the meeting.
A.
in which
B.
for which
C.
that
D.
with which
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