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【多選題】
從地面豎直上拋一個質量為m的小球,小球上升的最大高度為H,設上升過程中空氣阻力f恒定.對于小球從拋出到上升至最高處的過程,下列說法正確的是( )
A.
小球的動能減少了mgH
B.
小球的機械能減少了fH
C.
小球的重力勢能增加了mgH
D.
小球的加速度大于g
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舉報參考答案：
舉一反三
【單選題】I’d like to rent a house, modern, comfortable and _____ in a quiet place.
A.
in all
B.
above all
C.
after all
D.
first of all
【單選題】It is reported that the relationship between the two countries has ________.
A.
broken down
B.
broken out
C.
broken in
D.
broken up
【單選題】There are two buildings, ______ stands nearly a hundred feet high
A.
the larger
B.
the larger of them
C.
which of the larger
D.
the larger of which
【單選題】Mary’s pale face suggested that she ___ ill and her parents suggested she _____ a doctor.
A.
was, would see
B.
was, see
C.
be, seeing
D.
should be, should see
【單選題】My friend showed me round the town, _____ was very kind of him.
A.
which
B.
that
C.
where
D.
it
相關題目：
【單選題】I’d like to rent a house, modern, comfortable and _____ in a quiet place.
A.
in all
B.
above all
C.
after all
D.
first of all
【單選題】It is reported that the relationship between the two countries has ________.
A.
broken down
B.
broken out
C.
broken in
D.
broken up
【單選題】There are two buildings, ______ stands nearly a hundred feet high
A.
the larger
B.
the larger of them
C.
which of the larger
D.
the larger of which
【單選題】Mary’s pale face suggested that she ___ ill and her parents suggested she _____ a doctor.
A.
was, would see
B.
was, see
C.
be, seeing
D.
should be, should see
【單選題】My friend showed me round the town, _____ was very kind of him.
A.
which
B.
that
C.
where
D.
it
參考解析：
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