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【多选题】
弓形虫的感染阶段是A.
卵囊
B.
假包囊
C.
包囊
D.
滋养体
E.
雌雄配子
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皮皮学刷刷变学霸
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【单选题】By the time the first European travelers on the American continent began to record some of their observations about Indians, the Cherokee people had developed an advanced culture that probably was exc...
A.
The Cherokee chief was different in wartime than in peacetime.
B.
Before the arrival of the Europeans the Cherokees had developed a well-organized society.
C.
The Mayans and the Aztecs were part of the Cherokee tribe.
D.
Several Indian cultures had developed advanced civilizations before Europeans arrived.
【单选题】The train was crowded and I had to get into a carriage______there were already seven other people.
A.
when
B.
where
C.
which
D.
that
【单选题】There were no more than seven people living in the house.In the house she found a few things for seven people.
A.
Right
B.
Wrong
C.
Doesn't say
【简答题】共析碳钢加热为奥氏体后，冷却时所形成的组织主要决定于( ) (A)奥氏体加热时的温度 (B)奥氏体在加热时的均匀化程度 (C)奥氏体冷却时的转变温度
【简答题】加热时获得奥氏体的组织转变称为（ ）。A. 奥氏体化
【单选题】共析碳钢加热为奥氏体后，冷却时所形成的组织主要决定于( )。
A.
奥氏体加热时的温度
B.
奥氏体在加热时的均匀化程度
C.
奥氏体冷却时的转变温度
D.
奥氏体化后的晶粒度
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