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【单选题】
下列是关于手持技术数字化实验研究和成果凝练的一些步骤:1进行实验;2撰写论文;3论文投稿与发表;4设计实验;5撰写实验报告,你认为较为科学的操作顺序是( A )A.
④①⑤②③
B.
④①②⑤③
C.
①④②⑤③
D.
①④⑤②③
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【简答题】物质的量浓度(以其化学式为基本单元)相同的情况下,下列物质的水溶液pH最高的是()。A. NaAc B. Na2CO3 C. NH4Cl D. NaCl
【单选题】已知一个类A，类A有三个公有成员：void f1(int)，void f2(int)和int a；定义指向类A成员函数的指针是( )。
A.
A*p；
B.
int A::*Pc=&A.a；
C.
void(A::*pA) ()；
D.
void(A::*p
【单选题】When stocks with the same expected return are combined into a portfolio
A.
the expected return of the portfolio is less than the weighted average expected return of the stocks.
B.
the expected return of the portfolio is greater than the weighted average expected return of the stocks.
C.
the expected return of the portfolio is equal to the weighted average expected return of the stocks.
D.
there is no relationship between the expected return of the portfolio and the expected return of the stocks.
【单选题】已知一个类A有三个公有成员:void f1(int),void f2(int)和int a,指向类A成员函数的指针是( )。
A.
A *p
B.
int A::*pc=&A::a
C.
void A::*pa()
D.
A *pp
【单选题】You want to balance that out with some riskier investments that may bring a higher return, such as stocks . Stocks means the same as in sentence ________________ .
A.
If you had $ 50 , 000 in emergency savings I would not feel comfortable investing it in stocks.
B.
Pre - ordered items are shipped directly o nce they come into stock.
C.
The shop stocks all kinds of interesting gadgets, accessories, and furniture.
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