问题
单项选择题
闭式喷头应从每批进货中抽1%，但不得小于（）只进行密封性能试验。
A、3
B、5
C、10
D、20
答案
参考答案：B
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闭式喷头应从每批进货中抽1%，但不得小于（）只进行密封性能试验。
A、3
B、5
C、10
D、20
参考答案：B
| 阅读理解。 | ||
| ||
| 1. Where does the cruise start? | ||
| A. Kowloon Public Pier. B. Near Star Company. C. On the ferry. | ||
| 2. If Mr and Mrs Brown want to have dinner on the ferry, how much will they pay? | ||
| A. HK$300. B. HK$600. C. HK$420. | ||
| 3. Where can they buy the tickets? | ||
| A. A Kowloon Public Pier. B. Near Star Ferry Pier. C. Star Company. | ||
| 4. What can they see on the ferry? | ||
| A. A film. B. The city lights. C. Playing sports. | ||
| 5. If you are eleven years old and you don't have dinner during the cruise, how much will you pay? | ||
| A. HK$300. B. HK$120. C. HK$84. |