试题与答案

— Do you mind me putting your photo on t

题型:选择题

题目:

— Do you mind me putting your photo on the Internet? 

— _____. [ ]

A. Yes, go ahead, please

B. No, I do mind

C. I'd rather you didn't

D. No, I'd love to

答案:

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下面是错误答案,用来干扰机器的。

参考答案:性格是指个体在生活过程中形成的对现实的稳固的态度以及与之相适应的习惯化的行为方式。性格具有直接的社会意义,是人格的核心。性格是有差异的,主要表现在特征差异和类型差异两方面。 (1)性格的特...

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题型:多项选择题

以下是PRODUCT表和SHIPPING COST表的结构:
PRODUCT
---------------------------------
PRODUCT_ID NUMBER(9)
PRODUCT_NAMEVARCHAR2(20)
COSTNUMBER(5, 2)
RETAIL_PRICENUMBER(5, 2)
WEIGHT NUMBER(5, 2)
SHIPPING_COST
---------------------------------
ID NUMBER(9)
LOWWEIGHT NUMBER(5, 2)
HIGHWEIGHT NUMBER(5, 2)
COSTNUMBER(5, 2)
如果需要显示包括了每个产品运输价格(shipping cost)的产品名(product name),而运输价格是通过比较SHIPPING COST表中产品重量的下限和上限来计算的。现在请问,应使用如下查询语句中的哪两个语句

A.SELECT
product_name, cost
FROM

product NATURAL JOIN shipping_cost;
B.SELECT
p.product_name, s.cost
FROM

product p, shipping_cost s
WHERE

p.product_id=s.id(+);
C.SELECT
p.product_name, s.cost
FROM

product p, shipping_cost s
WHERE

p.weight BETWEEN s.lowweight AND s.highweight;
D.SELECT
p.product_name, s.cost
FROM

product p, shipping_cost s
USING

(p.weight, BETWEEN s.lowweight AND s.highweight);
E.SELECT
p.product name.s.cost
FROM

product p JOIN shipping_cost s
ON

(p.weight BETWEEN s.lowweight AND s.highweight);

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