问题 填空题

电磁打点计时器和电火花打点计时器都是使用______电源的仪器,电磁打点计时器的工作电压是______V,当电源频率是50Hz时,它每隔______ s打一次点,现在用打点计时器测定物体的速度,当电源频率低于50Hz时,如果仍按频率为50Hz的时间间隔打一次点计算,则测出的速度数值______(填“大于”.“小于”或“等于”)频率为50Hz时测出的速度的值.

答案

电磁打点计时器是使用4-6V交流电源的仪器,其打点周期与交流电的周期相同,若交流电频率为50赫兹,则其打点周期为0.02s,当电源频率低于低于50Hz时,实际打点周期将变大,而进行计算时,仍然用0.02s,因此测出的速度数值将比物体的真实数值大.

故答案为:交流,4-6,0.02,大于.

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TEACHER OF HEALTH AND SOCIAL CARE

This post is suitable for both experienced and newly qualified staff and part time would also be considered.

You will:

·Be a strong supporter of the school's vision.

·Be able to communicate your enthusiasm for your subject to pupils of all abilities.

We will offer you:

·A friendly and supportive team.

·An excellent track record at GCSE, A Level and professional courses.

DESIGN TECHNOLOGY TEACHER( FOOD SPECIALIST)

This post is suitable for bodi experienced and newly qualified staff.Design Technology is a

strong department, fully staffed with specialist teachers.

The Department:

·Has 7 full time and 4 part time specialists.

·Is recognized nationally as an outstanding department through its work with Young Engineers.

You will:

·Have the ability to teach Food Technology.(The ability to offer more than one DT subject or Health and Social Care would be an advantage but not essential)

·Have the ability to integrate ICT into their teaching.

We will offer you:

·A friendly and supportive team in a successful department.

·Free loan of your own laptop.

TEACHER OF ENGLISH

This post is suitable for both experienced and newly qualified staff.

You will:

·Have excellent teaching skills and good classroom management.

·Have the ability to teach both English Language and Literature at KS3, KS4&KSs(if possible).

We will offer you:

·A friendly and supportive team of eleven specialist members of staff.

·The opportunity to teach media and/or communication studies if appropriate (not essential).

64.According to the passage, the ability to make pupils interested in their courses is important for

A.teachers of English        B.design technology teachers

C.teachers of health and social care        D.teachers of food technology

65.Communication may be taught in the class of ____.

A.English.            B.Design Technology

C.Health and Social Care        D.Food Technology

66.Design Technology is excellent because ____.

A.it is partly made up of qualified staff     B.they have specialist teachers

C.11 specialists are full-time      D.they provide free laptop

67.Literature is required ____.

A.for Design Technology    B.for Food Technology

C.at KS4          D.for Health and Social Care

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