【单选题】下列程序输出结果? #define PI 3.14 #define S(r) PI*r*r main() {float a,area; a=2; area=S(a); printf(“r=%f,area=%f”,a,area); }
B.
r=2.000000,area=12.560000
【单选题】According to the situation and the route, which activity area is the reading area next to ?
【判断题】实体店同时又进行网上零售的目的只是为了进一步扩大销售。
【单选题】What is defined as an area, excluding sea area A1, within the radiotelephone coverage area of at least one MF coast station, in which continuous DSC alerting is available as defined by the IMO?
A.
Ocean Area Regions AOR-E, AOR-W, POR or IOR