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【简答题】
If you are a fruit grower—or would like to become one—take advantage of Apple Day to see what’s around. It’s called Apple Day but in practice it’s more like Apple Month. The day itself is on October 21, but sinceit has caught on, events now spread out over most of October around Britain. Visiting an apple event is a good chance to see, and often taste, a wide variety of apples. To people who are used to the limited choice of apples such as Golden Delicious and Royal Gala in supermarkets, it can be quite an eye opener to see the range of classical apples still in existence, such as Decio which was grown by the Romans. Although it doesn’t taste of anything special, it’s still worth a try, as is the knobbly( 多疙瘩的 ) Cat’s Head which is more of a curiosity than anything else. There are also varieties developed to suit specific local conditions. One of the very best varieties for eating quality is Orleans Reinette, but you’ll need a warm, sheltered place with perfect soil to grow it, so it’s a pipe dream for most apple lovers who fall for it. At the events, you can meet expert growers and discuss which ones will best suit your conditions, and because these are family affairs, children are well catered for with apple-themed fun and games. Apple Days are being held at all sorts of places with an interest in fruit, including stately gardens and commercial orchards( 果园 ).If you want to have a real orchard experience, try visiting the National Fruit Collection at Brogdale, near Faversham in Kent.
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【单选题】三相半波相控整流电路(带电阻性负载),自然换流点在距相电压波形过零点( )电角度。
A.
30°
B.
60°
C.
90°
【判断题】旅游资源是指对旅游者具有吸引力的自然存在和历史文化遗产。
A.
正确
B.
错误
【判断题】三相半波可控整流电路带阻性负载时,如果触发脉冲出现在自然换相点之前,则输出电压会出现缺相现象。
A.
正确
B.
错误
【单选题】下列关于旅游资源内涵的叙述,正确的是 ( )
A.
凡能达到观光、猎奇、探险、疗养等旅游目的的一切自然资源和文化资源都是旅游资源
B.
具有一定的经济、社会和文化价值,给旅游业带来一定经济效益和社会效益的 一切自然存在与社会创造 都是旅游资源
C.
旅游资源是指具有一定吸引力,能使旅游者得到物质享受和精神满足的一切自然存在与社会创造
D.
旅游资源是指对旅游者产生吸引力,可以为旅游业开发利用,并产生经济效益和社会效益的 一切自然存在与社会创造
【简答题】旅游资源是指对旅游者具有( )的自然存在和历史文化遗产,以及直接用于旅游目的的( )。
【判断题】旅游资源是指对旅游者具有吸引力的自然存在和历史文化遗产,以及直接用于旅游目的的人工创造物。
A.
正确
B.
错误
【判断题】旅游资源是指对旅游者具有吸引力的自然存在和历史文化遗产,以及直接用于旅游目的的人工创造物。
A.
正确
B.
错误
【单选题】旅游资源是指先于旅游而( )于一定地域空间并因其对潜在旅游者所具有的休闲体验价值而可供旅游产业加以开发的潜在财富形态。旅游资源的经济性质是原赋的旅游吸引物,是一种特殊的自然(原赋)资源,是旅游业所特有的一种生产要素。
A.
客观不存在
B.
客观存在
C.
主观存在
D.
主观不存在
【单选题】旅游资源是指对旅游者具有吸引力的自然存在和历史文化遗产以及直接用于旅游目的的人工创造物。这是()对旅游资源的定义。
A.
黄辉石
B.
陈传康
C.
保继刚
D.
杨桂华
【单选题】三相半波可控整流电路带电阻性负载时,若触发脉冲加于自然换相点之前,则输出电压将()。
A.
很大
B.
很小
C.
出现缺相现象
D.
出现忽高忽低现象
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