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【简答题】
简述革兰氏染色的过程，并说明革兰氏染色机理，其中关键步骤是哪一步。为什么？
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皮皮学刷刷变学霸
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【简答题】合金相结构主要有( )和( ),其中( )常作为合金的基本相,而( )少量、弥散分布时可强化合金,常作为强化相。
【简答题】跟单L／C与银行L／G是国际贸易业务中的两种重要结算方式。问：这两种结算方式有哪些相同与不同的特点?
【简答题】合金相结构主要有__________和__________,其中__________常作为合金的基体相,而__________少量、弥散分布时可强化合金,常作为强化相。
【简答题】我国石灰岩分布面积大、岩溶地形发育最典型的地区是
【单选题】- Jenny, do you want to be doctor in the future? -No, my mom expects me a doctor but I want to be a teacher.
A.
be
B.
is
C.
was
D.
to be
【单选题】Hi, I’m Bob. My mom asked me to go shopping with her. I hate it! Shopping is so boring. Look at the long list: twelve eggs, two kilos of pork, a box of butter, some chicken, a jar of jam...My mom said...
A.
They have no food.
B.
Many things are on sale.
C.
They are very hungry.
D.
Things are sold out.
【单选题】—Mom, I want to ask Grandpa a question. —Oh. _____ is reading a newspaper upstairs. [ ]
A.
He
B.
Him
C.
His
D.
Himself
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