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【单选题】
板式塔是 接触式气液传质设备;填料塔是 接触式气液传质设备。A.
连续 连续
B.
逐级 逐级
C.
逐级 连续
D.
连续 逐级
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【单选题】Workmen discovered a vase full of Roman coins __________underneath the floor of an old building.
A.
hid
B.
hiding
C.
hidden
D.
hide
【简答题】AV Clip 17 : AV 17.mp4 Watch the video clip three times and complete each statement according to the information from the video clip. There are medical (1) _______________ that are available. A lot of...
【简答题】Task: Audio-visual Exercises AV Clip 9: The Truth of Vitamins AV 3+5+6+7+8+9+10+11 The Truth about Vitamins Supplements.mp4 Watch the video clip three times and give a short answer to each question.
【单选题】______ in 1292, the bridge is over 700 years old.
A.
Built
B.
Being built
C.
Building
D.
To be built
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