Classical Greek and Arabic have a third number: ___ , something like the English “both”. ( ) A: single B: dual C: plural D: trial

The dual symbol for a NAND gate is negative -AND symbol

The duality of a dual problem is not necessarily the primal problem. ( ）

创建一条弧线的函数是（ ）。 A: arc(number x, number y, number r, number sAngle, number eAngle, boolean counterclockwise) B: rect(number x, number y, number width, number height) C: arcTo(number x1, number y1, number x2, number y2, number radius) D: fillRect(number x, number y, number width, number height)

对应"芯片级"的元器件封装库是：Dual In-line Packages。

According to recording 4.1, which statement is true? （ ）。 A: Number four and number five. B: Number one and number two. C: Number three and number four. D: Number one and number four.

如果Number=3，下列命题为真。If Number = 3, point out the truth and false of the following statements.Int(Number * Number) = Number * Number

在进行灵敏度设置时，在Dual Computations的下拉菜单中选择

如果Number=7，下列命题为真。If Number = 7, point out the truth or false of the following expressions.Sqrt(Number*Number ) == Int(Sqrt(Number*Number))

你需要计算从2007年1月1日至今天的天数，日期的默认存储格式为dd-mon-rr。下列哪个SQL能得到正确的结果（） A: SELEC B: SYSDATE-’01-JAN-2007’FROMDUAL； C: SELEC D: SYSDATE-TO_DATE（’01/JANUARY/2007’）FRO E: DUAL； F: SELEC G: SYSDATE-TO_DATE（’01-JANUARY-2007’）FRO H: DUAL； I: SELEC J: TO_CHAR（SYSDATE，’DD-MON-YYYY’）-’01-JAN-2007’FRO K: DUAL； L: SELEC M: TO_DATE（SYSDATE，’DD/MONTH/YYYY’）-’01/JANUARY/2007’FRO N: DUAL；