问题 问答题 简答题

李属坏死环斑病毒的危害是什么?如何防治?

答案

参考答案:李属坏死环斑病毒几乎可侵染所有的李属植物,引起坏死、皱缩、花叶、环斑、穿孔、枯死等,特别在苗期发生会造成严重损失。该病毒主要通过种子和苗木的调运远距离传播,近距离主要通过嫁接传播扩散。

主要防治措施:

(1)加强检疫。调运时实施检疫,严防种苗传播病毒。

(2)农业防治。建立无毒种苗繁育基地,发展无疫病优质果树生产区。

(3)化学防治。选择抗病毒药剂进行化学防治,重点进行药剂灌根和主干环剥涂药。

多项选择题 X型题
完形填空

第二节:以下第81至85题是五个应聘者的信息。请阅读A至F职位招聘的信息,选出符合他们要求的最佳选项。选项中有一项是多余选项。(答案写在答题卷上)

______ 81. Elizabeth Nagata.

Elizabeth once studied in a secretarial program when she was at university. She has worked in Sumitomo Corporation as an executive assistant for eight years.

______ 82.James Florian.

James once worked as a salesperson and served as the director of new home sales in both Forest Lakes and Glenmore for three years. He can speak excellent German and English, and he is very good at dealing with people.

______ 83.Arthur Smith.

Arthur, a 22-year-old boy, has just graduated from college. He’s got a diploma in Library Technician Program. Wishing to have some free time, he doesn’t want to work full time.

______ 84. Gillian Anderson.

Gillian graduated from the University of Manchester and got a Master’s Degree in Library Science five years ago. As soon as she left school, she worked in St. Bride Printing Library as a librarian. Now she is skilled in dealing with almost everything in the library system.

______ 85.Jerome Fingelhamm.

Jerome, aged 32, majored in computer science when he was at university. He has worked in a software company for six years and is an expert at both software and hardware. He got a driver’s license when he was eighteen years old.

Sales Executive

We are looking for intelligent sales staff for our ever-growing team. Applicants must have at least one year sales experience, knowledge of English language publications and media, good English and social skills.

B. Executive Assistant Vancouver

Island Regional Library (VIRL) has an opportunity for an executive assistant. A diploma in Business Administration or a secretarial program is needed. A minimum (最小值) of five years’ experience as an executive assistant to an executive director is required.

C. Reference Specialist

You’re responsible for providing support for reference services in the library system. The successful applicant must have a Master’s Degree in Library Science and a minimum of three years’ experience as a professional librarian.

D. Library Technician

We need a part-time library technician. Your position is responsible for library cataloging (编目录), binding, ordering publications, assisting in legal research. Both technical and reference services are required. The successful applicant should have a Library Technician diploma (文凭).

E. Circulation Director(发行总监)

We are looking for a circulation director. The successful applicant must have good managing skills, including the ability to assign tasks to ensure the work of the circulation department is done to the highest standard. A sales experience of at least ten years is needed.

F. Computer & Network Assistant

This position is responsible for the activities related to the use of automated (自动化的) systems. Duties include installing (安装), repairing and updating software and hardware. A driver’s license is necessary.