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【单选题】
下列关于遗传物质的说法正确的是A.
大多数是RNA
B.
病毒的遗传物质是RNA
C.
HIV的遗传物质为DNA
D.
大肠埃希菌遗传物质为DNA
E.
RNA病毒不能复制
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反馈参考答案：
举一反三
【单选题】他们应该在一小时以前到达这里。
A.
They should suppose to be here an hour ago.
B.
They should be supposed be here a hour ago.
C.
They were supposed to be here an hour ago.
【简答题】单位工程施工中遵循的四先四后指的是什么?
【单选题】You are thinking about buying a long-term bond from Flex Industries, an established firm with several years of profitability. Relative to other bonds,
A.
both the long term and the low risk of Flex bonds would tend to make the interest rate they pay lower.
B.
the long term of Flex bonds would tend to make the interest rate they pay lower, while the low risk of Flex bonds would tend to make the interest rate they pay higher.
C.
the long term of Flex bonds would tend to make the interest rate they pay higher, while the low risk of Flex bonds would tend to make the interest rate they pay lower.
D.
both the long term and low risk of Flex bonds would tend to make the interest rate they pay higher.
【简答题】燃油压力调节器按结构不同分 _____________ 和 _____________ 燃油压力调节器。
【判断题】The four product-mix dimensions (length, width, depth, consistency) permit the company to expand its business.
A.
正确
B.
错误
【简答题】燃油压力调节器按结构不同分_____________和_____________燃油压力调节器。
【单选题】他们应该在一小时以前到达这里。
A.
They were supposing to be here an hour ago.
B.
They were supposed to be here an hour ago.
【单选题】Product mix ________ refers to the number of versions offered for each product in the line.
A.
length
B.
depth
C.
height
D.
width
【单选题】The ________ of the product mix refers to the total number of items in the mix.
A.
width
B.
length
C.
depth
D.
range
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