湿球温度的概念是什么?
参考答案:
用带有水分的湿纱布包在温度计的感温球上,这样的温度计称为温球温度计,它测出的温度称为湿球温度。在空气没有饱和时湿球温度低于于球温度。
阅读下面程序 public class Test1 {public static void main(String[] args){ System.out.println(34+56-6); System.out.println(26*2-3); System.out.println(3*4/2); System.out.println(5/2);} } 程序运行结果是
A.84 49 6 2
B.90 25 6 2.5
C.84 23 12 2
D.68 49 14 2.5
You have a large,broken-down vessel in tow with a wire rope and anchor cable towline. Both vessels have made provision for slipping the tow in an emergency; however,unless there are special circumstances().
A.the towing vessel should slip first
B.the vessel towed should slip first
C.they should slip simultaneously
D.either vessel may slip first