既能被 5 整除，又能整除 30 的正整数分别是哪些？其中最大的是多少？

What are the positive integers that are divisible by both 5 and 30? What is the largest of these numbers?

将 2、3、5、6、8、9、10、12、15、20这 10 个数中存在整除关系的式子全部写出来。

Write down all expressions in which the numbers 2, 3, 5, 6, 8, 9, 10, 12, 15, and 20 are divisors of one another.

某品牌饮料外包装上标明＂净含量： 180ml±5ml＂，现随机抽取四种口味的这种饮料，它们的净含量如下表所示，其中净含量不合格的是                    口味的饮料。

The outer packaging of a certain brand of beverage states “Net Content: 180 mL ± 5 mL.” Four flavors of this beverage were randomly selected, and their net contents are shown in the table below. The flavor with a net content that does not meet the standard is                       .

【视频解析】🔵有

(IG)(CE)
An office block has three basement levels(-1,-2 and-3),a ground floor(0)and 15 floors above the ground floor(1 to 15).Where willthe lift be in the following situations?

a Starts on the ground floor and goes down one floor then up five?

b Starts on level-3 and goes up ten floors?

c Starts on floor 12 and goes down 13 floors?

d Starts on floor 15 and goes down 17 floors?

e Starts on level-2,goes up seven floors and then down eight?

一栋办公楼有三个地下层（-1、-2 和 -3）、一个地面层（0）以及地面层以上的 15 层（1 至 15）。在以下情况下，电梯会位于何处？

a 从地面层出发，先下行一层，然后上行五层？

b 从-3层出发，上行十层？

c 从12层出发，下行13层？

d 从15层出发，下行17层？

e 从-2层出发，上行七层，然后下行八层？