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更多“trial/'traɪəl/（）”相关的问题
设有常系数齐次线性微分方程组
,A为二阶常数矩阵,记p=-trA,q=detA,设p2+q2≠0,试证
(1)当p＞0且q＞0时,零解渐近稳定;
(2)当p＞0且q=0;或p=0且q＞0时,零解渐近稳定;
(3)其它情形下零解都不稳定.
企业产品介绍和推销
【说明】
假设你是一家手提包公司的经理，写信向客户White 先生介绍公司产品、争取订单。
【内容】
1. 向对方提供一份产品目录;
2. 本公司产品以高质量著称，并的到广泛承认;
3. 对方下一份试订单之后，就会对产品的质量有信心;
4. 交易条款非常慷慨，欢迎对方早日下单。
【Words for reference】
catalogue 目录 handbag 手提包
high quality 高质量 acknowledge 承认
trial order 试订单 generous terms 慷慨的条款
FLEDGLING:
A．alert audience
B．champion
C．reticent assistant
D．seasoned practitioner
E．newly transformed person
Which train has now been cancelled？
A．The train to Jinan．
B．The train to Zhengzhou．
C．The train to Hangzhou．
The child couldn't comprehend the advanced textbook.
A. interpret
B. read
C. understand
D. translate
A．They are very easy to read.
B．They are cheap and popular.
C．They are translated into English.
D．They are convenient for the users.
What is Merchant Transit planning to do？
A．Offer a discount
B．Raise train fares
C．Buy new train cars
D．Add new train routes
Where does this information probably appear？
A．In a guide book
B．In a tour program
C．In a travel itinerary
D．In a flight manual
