下列说法正确的是 [ ] A.硅材料广泛应用于光纤通讯 B.工艺师利用盐酸刻蚀石

题型:选择题

问题:

下列说法正确的是 [ ]

A.硅材料广泛应用于光纤通讯

B.工艺师利用盐酸刻蚀石英制作艺术品

C.水晶项链和餐桌上的瓷盘都是硅酸盐制品

D.粗硅制备单晶硅不涉及氧化还原反应

考点:二氧化硅单质硅硅酸盐
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对深部真菌和浅表真菌感染均有效的药物是()

A.灰黄霉素

B.制霉菌素

C.氟康唑

D.酮康唑

E.氟胞嘧啶

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运输和装卸气瓶时,下列选项中,不安全的行为是( )。 (1) 气瓶必须佩戴好瓶帽,轻装轻卸,严禁抛、滑、滚、碰 (2) 由于气瓶多是钢瓶,吊装时,可以使用电磁起重机和链绳 (3) 瓶内气体相互接触能引起燃烧、爆炸气瓶,不得同车(厢)运输 (4) 如果必经城市繁华区时,由于夜间黑暗易出错,应尽可能在白天运输 (5) 夏季运输应有遮阳设施,避免暴晒 (6) 运输可燃气体气瓶时,运输工具上应备有灭火器材

A.(1),(3)

B.(2),(4)

C.(5),(6)

D.(1),(5)

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Goats are amazing animals. They can survive just about anywhere. Altogether there are nine species of goats in the world.

Goats have more uses than you could ever imagine. Goat’s meat can be eaten and goat’s milk is becoming popular as a healthy choice to drink milk. Goat’s milk is easier to take in than cow’s milk and it is called universal milk as it can be used to bottle-feed most animals. In nutrition, it is also good. Goat’s skins are still used today to make gloves and other items of clothing. The initial reasons for domesticating (驯化) goats were to get goat’s hair, meat and milk. Goat’s skins were used up until the Middle Ages for making bottles to hold water and wine for people who were traveling or camping.

Just like sheep, goats are considered to be the first domesticated animal. The domestication process began over 10,000 years ago in a North Iranian town. A lot of people keep goats as pets nowadays.

Goats are easily trained and you can teach them to pull carts and walk on ropes. Goats are also known for escaping their pens(圈). If you have unsecured fencing, your goats will be interested in it and test it out and soon you will know where the openings are. Goats are also widely known for their ability to climb trees, although the tree generally has to be at a slight angle(角度).

If goats are raised correctly and trained from an early age, they never develop any bad habits. Goats will attack each other. However, if they’re corrected from an early age they never attack humans or other animals.

小题1:The passage is written mainly      .

A.to tell people how to raise goats

B.to let people know more about goats

C.to explain how goats are domesticated

D.to describe goats of different uses小题2:Why is goat’s milk called universal milk?

A.It is rich in nutrition and easy to take in.

B.It is good for our health.

C.It is suitable to feed most animals.

D.It is easy to get.小题3:If you want to keep a goat as a pet, it is important      .

A.to get along well with it

B.to find a professional trainer

C.to develop its ability

D.to train it when young小题4:Which of the following words can best describe goats?

A.Curious and clever.

B.Unfriendly and naughty.

C.Careful and lazy.

D.Stubborn and quiet.

题型:选择题

如图所示,可绕O点转动的质量均匀的金属杆OA,在力F的作用下静止水平位置,请画出金属杆重力G的示意图和力F的力臂。

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患者女性,46岁。半年前因肺癌行肺叶切除输血400ml。现为原发性肝癌行右半肝切除,术中失血多,快速输库血1200ml时创面渗血加重,血压下降,尿液呈红色。

首先诊断应是()

A.肝功能衰竭

B.肾衰竭

C.心泵功能衰竭

D.急性溶血反应

E.血液污染

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