皮皮学，免费搜题
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【判断题】
Les étudiants semblent attentifs en cours.A.
正确
B.
错误
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】In the circular-flow diagram,
A.
income from factors of production flows from firms to households.
B.
goods and services flow from households to firms.
C.
factors of production flow from firms to households.
D.
spending on goods and services flow from firms to households.
【单选题】You’d better change another book, because ______ page of the book is torn, and ______ cover looks very old. K_S_5_U
A.
a; the
B.
the; a
C.
the; the
D.
a; a
【单选题】Put the book ______ it should be when you’ve finished reading it.
A.
how
B.
which
C.
where
D.
who
【简答题】背《将进酒》,底下录音上传。唱歌也行,歌声录音上传。
【简答题】Consider incompressible flow in the entrance of a circular tube, as in Fig. 6-39. The inlet flow is uniform, u 1 =U o . The flow at section 2 is developed pipe flow. Find the wall drag force F as a fu...
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