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【简答题】
急性苯中毒的毒作用特点是______,慢性苯中毒的毒作用特点是 ______。
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【简答题】读短文,回答问题。 This is my room. There is a big table. There are four chairs around the table. There is a bed between (在......之间) the end table and the big table. There is a computer on the table. The compu...
【简答题】阅读理解,判断正误。 This is my ideal (理想的) room.  There is a table in the room.  There is a desk near the window.There is a computer and some books on the desk.  There are some flowers (花) and green plants on ...
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A.
常开触点的并联
B.
常开触点的串联
C.
常闭触点的并联
D.
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【简答题】牌号ZG200-400中,字母“ZG”表示( ),数字“400”表示( )。
【简答题】牌号ZG200-400中,字母“ZG”表示( ),数字“400”表示( )。
【单选题】There is big table in the dining room.
A.
an
B.
/
C.
the
D.
a
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