【单选题】The forward exchange rate is
A.
the exchange rate at which economic agents agree yesterday to exchange currencies at some specified time in the future.
B.
the exchange rate at which economic agents agree today to exchange currencies at some specified time in the future.
C.
the exchange rate at which economic agents agree today to exchange currencies at some specified time in the past.
D.
the quotation between two currencies for immediate delivery
【简答题】小明将某点关于x轴的对称点误认为是关于y轴的对称点,得到点(-3,-2),则该点关于x轴对称的点的坐标是______.
【单选题】包括跨专业的工作的复杂项目,能最有效地被 管理。
【简答题】MSP430F169 单片机共有( )组 I/O 端口,每组 I/O 端口可独立编程且有( )个引脚。
【简答题】小华看到了坐标系中点A关于y轴的对称点为B(a,b),而点B关于x轴的对称点为C(-3,-2),点A关于x轴对称点为D,若将A、B、C、D各点的纵坐标加3后描出变化后的A、B、C、D各点,并顺次连接,求出此四边形面积.