皮皮学，免费搜题
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【单选题】
X1、X 2、X 3为事故树的三个基本原因事件,根据布尔代数的运算定律,布尔代数式X1(X1+X 2+X3)的简化式为( )。A.
X1
B.
X1X 3
C.
X 2
D.
X1+X 2
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皮皮学刷刷变学霸
举一反三
【简答题】连词组句。 1. brush, their, they, hair ___________________. 2. they, hands, wash, their ___________________. 3. take, they, a, shower ___________________. 4. wear, clothes, they, their ___________________.
【多选题】Which of the metablic processes happened on the bacterial cell membrane( ).
A.
Respiration
B.
photosynthesis
C.
DNA replication
D.
Synthesis of lipids and cell wall constituents
【简答题】听音，填空。 1. My hair is ____________. 2. Her eyes are ____________. 3. What colour is ____________ hair? 4. My eyes are ____________.
【单选题】Which of the following would you NOT find in a bacterial cell? ( )
A.
DNA
B.
cell membrane
C.
Golgi apparatus
D.
ribosomes
【单选题】公式SUM(A2∶A5)的作用是()。
A.
求A2到A5四个单元格数值型数据之和
B.
不能正确使用
C.
求A2与A5单元格之比值
D.
求A2、A5两个单元格数据之和
【单选题】( ) assists bacterial cell in attaching( 黏附 ) to other surface.
A.
fimbriae
B.
cell wall
C.
cell membrane
D.
plasmid
【单选题】公式SUM（A2∶A5）的作用是（）。
A.
求A2到A5四个单元格数值型数据之和
B.
不能正确使用
C.
求A2与A5单元格之比值
D.
求A2、A5两单元格数据之和
【单选题】She made some highly complimentary _________ remarks about their school.
A.
complimentary
B.
complementary
C.
complicated
D.
complex
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