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【单选题】
当汽车蓄电池电压低于()伏时,汽车无法启动A.
12
B.
11.5
C.
10
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【简答题】已知函数 与 的定义域为 ，有下列5个命题： ①若 ，则 的图象自身关于直线 轴对称； ② 与 的图象关于直线 对称； ③函数 与 的图象关于 轴对称； ④ 为奇函数，且 图象关于直线 对称，则 周期为2； ⑤ 为偶函数， 为奇函数，且 ，则 周期为2。 其中正确命题的序号为 。
【单选题】Have you ever heard the old saying 'Never judge a egg by its shell'? This is a good rule to follow when trying to judge the intelligence(智力) of others. Some people have minds that shine only in certai...
A.
a good writer is always a good speaker
B.
a good writer may not be a good speaker
C.
a good writer will find himself speechless
D.
a speechless person always writes well
【单选题】Do you agree to the old saying ______ absence makes the heart grow fonder?
A.
since
B.
when
C.
that
D.
as
【单选题】Have you ever heard the old saying 'Never judge a egg by its shell'? This is a good rule to follow when trying to judge the intelligence (智力) of others. Some people have minds that shine only in certa...
A.
a good writer is always a good speaker
B.
a good writer may not be a good speaker
C.
a good writer will find himself speechless
D.
a speechless person always writes well
【单选题】The old saying that you should live each day_________it was your last is a nice view.A．only ifB．e
A.
34．The old saying that you should live each day_________it was your last is a nice view. A．only if
B.
even if
C.
as long as
D.
as though
【简答题】已知抛物线 与y轴交于点C,则点C的坐标是（ ）；若 点C′是点C关于该抛物线的对称轴对称的点，则 点的坐标是（ ）.
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