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【单选题】
关于受精卵发育与，正确的是A.
获能的精子穿透初级卵母细胞的透明带，为受精开始
B.
妊娠期的子宫内膜称为蜕膜
C.
精子到达输卵管与卵子相遇，顶体外膜破裂释放出顶体酶，称精子获能
D.
囊胚与子宫肌层间的蜕膜为真蜕膜
E.
早孕因子能抑制淋巴细胞活性
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【简答题】某32位计算机,CPU主频为800MHz, Cache命中时的CPI为4, Cache块大小为 32字节;主存采用8体交叉存储方式,每个体的存储字长为32位、存储周期为40 ns;存储器总线宽度为32位,总线时钟频率为200 MHz,支持突发传送总线事务。侮次读突发传送总线事务的过程包括:送首地址和命令、存储器准备数据、传送数据。每次突发传送32字节,传送地址或32位数据均需要一个总线时钟周期。请...
【单选题】Under D/P, all the documents, and usually title to the goods, are released to the buyer upon ______.
A.
his acceptance of the draft for payment at a specified later date
B.
his payment of the amount specified under reserve
C.
his partial payment of the bill amount
D.
his payment of the amount specified
【简答题】若存储器的数据总线宽度为8位,存取周期为100ns,则存储器的带宽是多少?
【简答题】Directions: You are asked to write 160～200 words under the title of The Advantages and Disadvantages of Private Tutoring. You should base your composition on the outline given in English below: Outlin...
【简答题】After his death, Wallace Stevens s previously uncollected works appeared under the title
【单选题】The best title for this passage could be ______.
A.
A Company under Fire
B.
A Debate on Moral Decline
C.
A Lawful Outlet of Street Culture
D.
A Form. of Creative Freedom
【单选题】Under conditional lease, the company or the bank holds the title, takes the investment credits and depreciation expenses, and sells or releases the facilities when the lease expires.
A.
正确
B.
错误
【单选题】The best title for this passage might be______.
A.
A Company under Fire
B.
A Debate on Moral Decline
C.
A Lawful Outlet of Street Culture
D.
A Form. of Creative Freedom
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