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【多选题】
EDI具有( )特点。A.
使用对象是具有经常性业务联系的单位
B.
传递的资料是业务资料
C.
EDI文本具有法律效力
D.
需要人工处理
E.
实时通信
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反馈参考答案：
举一反三
【单选题】.Was it______ it snowed last night that you didn’t come?
A.
that
B.
because
C.
why
D.
if
【单选题】Was it because it snowed last night ______ he didn't come?
A.
why
B.
that
C.
when
D.
then
【单选题】听力原文：It snowed last night, didn't it? (A) No, the heater is on. (B) Yes, it was really cold. (C) No, it's warmer upstairs. (17)
A.
B.
C.
【单选题】Was it because it snowed last night _____ you didn't come?
A.
when
B.
that
C.
so
D.
what
【简答题】据根短文内容判断正（T）误（F）。 Snow fell on the mountain. It snowed and snowed. The snow did not melt. It became deep and heavy. The snow on the bottom pressed together, then it became ice. The ice was very wide a...
【简答题】某药材中含有下列化合物,其提取分离过程如以下工艺,请将各化合物填于该工艺1、2、3、4的适当位置并说明原因。
【简答题】阅读短文，完成下列各题。 Snow fell on the mountain. It snowed and snowed. The snow did not melt (融化). It became deep and heavy. The snow on the bottom pressed (挤压) together, it became ice. The ice was very wide a...
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