痰液具有净化呼吸道的作用,产生痰的部位是[ ] A.口腔 B.咽 C.喉 D.气

题型:选择题

问题:

痰液具有净化呼吸道的作用,产生痰的部位是[ ]

A.口腔

B.咽

C.喉

D.气管和支气管

考点:呼吸系统的组成和功能
题型:选择题

掘进工作面的通风采用“三专”供电是指哪“三专?

题型:选择题

Pottery is the name given to all kinds of useful or artistic objects made from clay. Pottery can be plates or water pots or baskets. Pottery can be large or small, fancy or plain. Pottery is part of the large family of ceramics(陶器).Ceramics are synthetic materials. For example, bricks and tiles (瓦片) are both ceramics.

How is pottery made? First, a potter takes some clay. Clay is a soft, red material from the earth. It looks a little like red dirt, but it's very different. Clay is thick and rich. Wet clay can be worked into any shape. When the clay dries, it will keep that shape. The potters takes some clay and pushes and squeezes(挤压)it until it is soft and smooth. After that, the clay can be shaped into anything. There are several ways to shape clay. Sometimes potters use their hands. Sometimes they use a special wheel. They place the clay in the center of a round, flat wheel. The wheel moves very fast, and the potter shapes the clay.

After the potter has shaped the clay, it can be decorated(装饰). Potters use glaze, which is a kind of paint, to decorate their work. Some glazes are very simple. Other glazes have beautiful colors and designs. The glaze is not just beautiful. It is also useful. The glaze makes the pottery smooth and waterproof. Potters also make some decorative lines and designs on the surface. After it is decorated, the clay must be baked, or fired, in a special oven.

Baking the clay at very high temperature makes it hard and strong. Firing also makes the glaze stick to the pottery. When the firing is over, the potter carefully removes the pottery from the oven and lets it cool slowly. If it cools too quickly, it could crack and break.

Since pottery is waterproof, it is very popular for dishes. You can find examples of pottery in almost any home. But pottery can also be found in museums. Some pieces of pottery are valuable and beautiful pieces of art.

小题1:It is possible that ceramics are materials of _______ .

A.metal

B.plastic

C.wood

D.earth小题2:The word "waterproof" means _______ .

A.能盛水的

B.防水的

C.溶解于水的

D.吸水性强的小题3:Which statement is NOT true according to the passage?

A.Plates, water pots and bowls are all examples of pottery.

B.Wet clay can be made into anything of different shapes by the hands or a special wheel.

C.The clay becomes smooth and waterproof because of the glaze.

D.After the firing in high temperature, pottery is easy to break.

题型:选择题

根据《1974年约克—安特卫普共同海损理算规则》规定,为代替一项原可作为共同海损费用而发生的任何额外费用,应视为并列入共同海损().

A.并应考虑为其他关系方节省开支的情况

B.并不应考虑为其他关系方节省开支的情况

C.并适应考虑为其他关系方节省开支的情况

D.并仅应考虑为货方节省开支的情况

题型:选择题

劳动者具有下列哪种情形,用人单位不可以解除劳动合同?()

A、劳动者因在履行职责中受贿,但因犯罪情节较轻被检察院决定不起诉

B、劳动者因犯罪被人民法院判处有期徒刑一年,缓期执行一年

C、劳动者因犯罪情节轻微被法院判处免予刑事处罚

D、劳动者因涉嫌犯罪被公安机关刑事拘留

题型:选择题

昆明的春季,甲方要求种植树木尽可能不摘叶或少摘叶,保证树木成活的防范措施有哪些?

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