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【单选题】
铁碳合金相图上的共析线是 线,共晶线是 ECF 线 线。 A.ECF 线 B.ACD线 C.PSK线A.
PSK线
B.
ECF线 。
C.
ECF 线
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举一反三
【单选题】I don't think Harry and Bill ____________before,____________?
A.
have met; haven't they
B.
have met; have they
C.
have seen; do
D.
have seen; don't they
【简答题】根据衣身和袖子的连接方式，可以将袖子分成三大类：连袖、半连袖、（ ）。
【单选题】—Where is your sister? —She the flowers now.
A.
waters
B.
watered
C.
has watered
D.
is watering
【简答题】根据汉语和首字母写出正确的英语单词。 1. We don't have classes on (周末)______. 2. I think someone in Class Nine ______(找到) his shoes. 3. The two (喜剧片) ______ are very interesting (comedy). 4. His friend's birthday is Dec...
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