下列属于钾肥的是（   ）

读某城市略图，完成下列问题。

【历史上重大改革回眸】阅读材料，回答问题

材料：契丹建国后，耶律阿保机将亲卫之众自部族中分离出来，创建由皇帝本人直接领导的“斡鲁朵”，“入则居守，出则扈从”。辽诸帝即位之始，例皆新建本人的斡鲁朵，同时也继承此前诸帝的斡鲁朵，使皇帝的亲卫力量独立于枢密院为首的政府之外，且可与政府的力量相抗衡。“有兵事，则五京、二州各（斡鲁朵之）提辖司传檄而集，不待调发州县、部族，十万骑军已立具矣。”至辽末，已有十三个斡鲁朵，合诸斡鲁朵，自成一体系，直属于皇帝。各斡鲁朵最高级的官员有二，“某宫契丹都部署”管理契丹人，“某宫汉儿渤海都部署”则管理汉、渤海人，其管理权限，可以说是军、民事务无所不包。这一体系，与掌管契丹等部族的北枢密院体系、掌管汉人渤海等州县人户的南枢密院体系并列。

——摘编自余蔚《辽代斡鲁朵管理体制研究》

    Many people like spring, because they can go out and do many kinds of activities. We made a survey about the activities that people like to do in spring. Here are the results.
Scott：
    In spring, I often visit my uncle and I like fishing with him. I also like boating and enjoy the beach. Last spring my uncle and I went boating. The dolphins came so close to us. It was very amazing. I hope that I can go there again soon.
Linda:
    My favorite spring activity is gardening (园艺). I think it is relaxing to work in the garden. I grow many flowers in my garden every year. They are so beautiful.
Nancy：
    I love spring. I love going to the beach and spending a whole day there. It is so relaxing to lie on the beach. I also like surfing in the sea.
James：
    I am twelve years old. My favorite spring activity is swimming. I started to learn swimming when I was seven years old. I always have a good time with my friends in the river.

判断正误.

只要画角就必须用量角器。