【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 ?
【多选题】信函是直邮中最重要的因素,信函拟写的技巧有哪些( )。
【单选题】Is an aisle (a) a narrow area between rows of seats, or (b) an area at the front of a classroom?
A.
a narrow area between rows of seats
B.
an area at the front of a classroom
【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