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【单选题】
以下关于空值(NULL)叙述正确的是A.
空值等同于空字符串
B.
空值表示字段或变量还没有确定值
C.
空值等同于数值
D.
空值使用在条件中可以进行比较运算
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举一反三
【单选题】在产品营销中,设计和开发精美的酒瓶,当瓶内的酒使用完之后,酒瓶可以用作花瓶或凉水瓶,以此方法吸引消费者购买。这种包装策略是( )
A.
类似包装
B.
附赠品包装
C.
组合包装
D.
再使用包装
【单选题】Rather than go through the extreme hot weather and see the World Expo, I prefer ______ at an air-conditioned room and watch TV.
A.
staying
B.
to stay
C.
stayed
D.
had stayed
【简答题】It’s easy to see how to help others, but what about those whose needs aren’t so obvious? This story may have happened a while back, but it was a lesson which has stayed with me and helped me ever sinc...
【简答题】If Ihad known it was so hot yesterday, _________________________________(我还不如呆在家里）A. I might as well have stayed at home.
【单选题】利用引力原则法确定常设机构的经营所得,主要是因为().
A.
该纳税人没有常设机构,但却有经营活动
B.
该纳税人有常设机构,但却不通过常设机构纳税
C.
该纳税人有常设机构,但其经营活动没有完全通过该常设机构进行
D.
该纳税人有常设机构,但常设机构不能正常运作
【简答题】补全对话，每空一词 A： 1 B：I went to the beach. A： 2 B：It was hot and rainy. A： 3 B：The people were very friendly. A：Did you swim？ B： 4 The water is very clean. How about your vacation? A： 5 I stayed at home an...
【单选题】If I had known it was so hot yesterday, I_________ have stayed at home.
A.
might well
B.
might as well
C.
as well
D.
as well as
【单选题】在产品营销中,设计和开发精美的酒瓶,当瓶内的酒使用完之后,酒瓶可以用作花瓶或凉水瓶,以此方法吸引消费者购买。这种包装策略是()
A.
更新包装策略
B.
附赠品包装策略
C.
配套包装策略
D.
再使用包装策略
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