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【单选题】
下列命题中的真命题是（ ）A.
3 是有理数
B.
π是有理数
C.
两个全等三角形的面积相等
D.
两个面积相等的三角形全等
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举一反三
【单选题】Where there is neither the name of the producer or the name of the manufacturer nor the trademark or brand name on the package, such package belongs to
A.
.Unlicensed neutral packing
B.
.Brand neutral packing
C.
Fixed brand production
D.
sales packaging
【简答题】Watch the video and match the name on the left with its related information on the right.
【简答题】Jim was so badly burnt that at first they began to _____ of his life. A. despair B. designate C. disappoint D. despise
【单选题】It is unimaginable for someone in such a high ______ in the government to behave so badly in public.
A.
situation
B.
position
C.
profession
D.
appointment
【单选题】The mechanical arm finds a tape by
A.
recording the file name on the tape
B.
identifying the printed code on the tape
C.
looking for its file name
D.
searching for the tape number
【单选题】The fish smells_________, so it sells___________. [ ]
A.
bad; bad
B.
badly; badly
C.
bad; badly
D.
badly; bad
【简答题】(一)记录两个光栅在未加应力时的反射波长(单位为nm)。
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