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【单选题】
一次课堂练习,小红做了如下四道因式分解,你认为小红做的不够完整的一题是(  )
A.
a 3 -a=a(a 2 -1)
B.
a 2 -2ab+b 2 =(a-b) 2
C.
a 2 b-ab 2 =ab(a-b)
D.
a 2 -b 2 =(a+b)(a-b)
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【单选题】Adobe Audition中让音乐产生渐渐消失的效果的操作叫什么名字?
A.
回声
B.
淡出
C.
失真
D.
淡入
【单选题】构建 cDNA 文库时,通常用到的载体是质粒和 λ 噬菌体。与质粒相比, λ 噬菌体克隆载体的容量( ),感染效率( )
A.
较小、较高
B.
较小、较低
C.
较大、较低
D.
相当、较高
【简答题】He wrote about individual differences and about the need to adjust instruction for all students, and anticipated the work of educational and school psychologists in the area of special education.
【单选题】下面()修饰符所修饰的方法不能被子类重写。
A.
final
B.
abstract
C.
static
D.
interface
【简答题】A.She once wrote about it. B.She thinks the man should write about it. C.She's been studying it recently. D.She particularly likes Romantic poetry.
【判断题】只要有病原生物存在,就一定可以发生病害。
A.
正确
B.
错误
【简答题】A.She once wrote about it. B.She thinks the man should write about it. C.She has been studying it recently. D.She particularly likes Romantic poetry.
【单选题】Sophia wrote about her experiences in notebooks.
A.
Right
B.
Wrong
C.
Not mentioned
【多选题】招标人甲欲完成一项招标工作,则根据《招标投标法》规定,一下()活动是必须的。
A.
招标人甲发布招标公告或寄送投标邀请书
B.
招标人甲编制相应的招标文件
C.
招标人甲组织潜在投标人踏勘项目现场
D.
招标人甲对投标人进行资格审查
E.
计算出标底并报招标主管部门审定
【单选题】Adobe Audition中让音乐产生渐渐消失的效果的操作叫( )。
A.
回声
B.
淡出
C.
失真
D.
淡入
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