问题
名词解释
焦物距
答案
参考答案：
自光学系统物方焦点到轴上物点的距离。
搜题请搜索小程序“爱下问搜题”
焦物距
参考答案：
自光学系统物方焦点到轴上物点的距离。
| 阅读理解。 | |||
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| 1. If an Australian student wants to learn Chinese, he or she can ______. | |||
[ ] | |||
| A. call 021-58609228 B. fax 021-58609728 C. email cherrylf@hotmail.com | |||
| 2. How many square meters is the garden of the house for sale? | |||
[ ] | |||
| A. 509 sqm. B. 428.8 sqm. C. 312.9 sqm. | |||
| 3. Where is Cherry working now? | |||
[ ] | |||
| A. Shanghai. B. Guangzhou. C. Beijing. | |||
| 4. If he goes skiing on ______ in Beijing Snow World Ski Park, Nick has to pay more money than on Tuesday. | |||
[ ] | |||
| A. Sunday B. Friday C. Wednesday | |||
| 5. If you want to ski for four hours on weekdays, how much money will you pay at least? | |||
[ ] | |||
| A. 138 yuan. B. 200 yuan. C. 208 yuan. |