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【多选题】
下列哪些情况需要通过计算离散系数来比较不同变量数列平均数代表性的高低A.
平均数大（小）者标准差也大（小）
B.
平均数大（小）者标准差也小（大）
C.
平均数相等，标准差不等
D.
标准差相等，平均数不等
E.
不同变量数列的计量单位不同
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【单选题】An E-MOSFET has values of = 4 V and = 12 mA when = 10 V. The device is being used in a circuit that has a value of = 6 V. What is the value of for the circuit? ( )
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13.33 mA
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【单选题】The memory interface circuit designed based on the 2M × 8b asynchronous SRAM memory chip CY62168G is shown in the following figure. The address range of the memory map is( )
A.
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B.
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