搜题请搜索小程序“爱下问搜题”
问题 判断题

EMS是基于java语言的程序

答案

参考答案：对

阅读理解
阅读理解。
                                                             Sydney Tower
Address: 100 Market St. Sydney
Phone: 02 9333 9222
Fax: 02 9333 9208
Open time: 9:00 am to 10:30 pm (Saturdays to 11:30 pm)
Ticket:$60 (for an adult)
           $30 (for a child)
Website: www.sydneytower.com.au <http://www.sydneytower.com.au>
How to get there: train to Town Hall Station and a short walk along Market Street
How to book tickets: by phone/ fax or through the web
Attraction: Sydney's best views are just beginning! Sydney Tower takes you to the highest point above
Sydney for exciting 360°views of our beautiful city.
1. Sydney Tower is ____________ in Sydney,Australia. 
A. the busiest street
B. the biggest station
C. the most beautiful park
D. the highest point
2. Sydney Tower opens at ____________. 
A. 8:00 am
B. 9:00 am
C. 10:30 pm
D. 11:30 pm
3. If an adult with two children goes to visit Sydney Tower, he has to pay ___________. 
A. $60
B. $90
C. $120
D. $150
查看答案
问答题

氮化铝（ AlN ）被广泛应用于电子工业、陶瓷工业等领域．在一定条件下，氮化铝可通过如下反应制得：Al2O3+N2+3C

 一定条件 
.
 
2A1N+3CO，现欲制备41t氮化铝，至少需要参加反应的氮气（N2）质量是多少？
查看答案