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【判断题】
当EA脚接高电平时，对ROM的读操作只访问片外程序存储器。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】三级管工作在放大区,要求(
)A. 发射结正偏，集电结正偏 B. 发射结正偏，集电结反偏 C. 发射结反偏，集电结正偏 D. 发射结反偏，集电结反偏
【单选题】Which one of the following statements related to the internal rate of return (IRR) is correct?
A.
The IRR yields the same accept and reject decisions as the net present value method given mutually exclusive projects.
B.
A project with an IRR equal to the required return would reduce the value of a firm if accepted.
C.
The IRR is equal to the required return when the net present value is equal to zero.
D.
Financing type projects should be accepted if the IRR exceeds the required return.
E.
The average accounting return is a better method of analysis than the IRR from a financial point of view.
【多选题】Which two statements are true regarding single row functions?（）
A.
They accept only a single argument
B.
They can be nested only to two levels
C.
Arguments can only be column values or constants
D.
They always return a single result row for every row of a queried table
E.
They can return a data type value different from the one that is referenced
【简答题】II. Pick out th e old-fashioned expressions from the following. 1. Kindly be advised 2. Please find enclosed herewith 3. Please do not hesitate to contact the underlined 4. We are pleased to know that...
【多选题】Which four are attributes of single row functions? （）
A.
cannot be nested
B.
manipulate data items
C.
act on each row returned
D.
return one result per row
E.
accept only one argument and return only one value
F.
accept arguments which can be a column or an expression
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