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【简答题】
蓄电池正极板的活性物质是 ,正极板通常呈 色; 负极板上的活性物质是 ,负极板通常呈 色;
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【单选题】--- What date is it? --- It’s _____.
A.
the June seven
B.
the seventh of June
C.
seventh June
D.
the June seventh
【单选题】The seventh day of the seventh lunar month is the only Chinese festival devoted______love in the Lunar calendar.
A.
at
B.
to
C.
in
D.
on
【单选题】Saturday is _ _ day _ a week. [ ]
A.
seven; of
B.
seventh; on
C.
the sixth; with
D.
the seventh; of
【单选题】________ day of the week is Sunday. [ ]
A.
first
B.
The first
C.
The seventh
D.
seventh
【简答题】It is the sh month of the year.
【单选题】机箱电源是整个主机的能源提供者,负责将交流 220V 电压转化为计算机所需的电压,它的输出电压最高为 ________ 。
A.
12V
B.
5 . 5V
C.
C 3 . 3V
D.
5V
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