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【單選題】
水平恒力F兩次作用在同一物體上，使物體沿力的方向發(fā)生相同位移，第一次是在光滑的水平面上，第二次是在粗糙的水平面上，兩次F做的功和功率的大小關(guān)系是
A.
W1=W2，P1>P2
B.
W1>W2，P1=P2
C.
W1>W2，P1>P2
D.
W1=W2，P1=P2
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舉報(bào)參考答案：
舉一反三
【單選題】From the text, we learn that Baccarat and Sorrenbourg are the names of ________.
A.
towns
B.
churches
C.
museums
D.
mountains
【單選題】What does the woman imply?
A.
She didn’t clean the apartment.
B.
She’ll help the man clean his apartment.
C.
She needs to clean the lab.
【單選題】What does the man imply?
A.
His coach didn’t help him enough.
B.
He had no chance of winning.
C.
He didn’t follow his coach’s advice.
【單選題】What does the man say about the activities?
A.
They aren’t very good because they’re so different.
B.
He thinks they should do both.
C.
It doesn’t matter which one they do.
相關(guān)題目：
【單選題】From the text, we learn that Baccarat and Sorrenbourg are the names of ________.
A.
towns
B.
churches
C.
museums
D.
mountains
【單選題】What does the woman imply?
A.
She didn’t clean the apartment.
B.
She’ll help the man clean his apartment.
C.
She needs to clean the lab.
【單選題】What does the man imply?
A.
His coach didn’t help him enough.
B.
He had no chance of winning.
C.
He didn’t follow his coach’s advice.
【單選題】What does the man say about the activities?
A.
They aren’t very good because they’re so different.
B.
He thinks they should do both.
C.
It doesn’t matter which one they do.
參考解析：
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