引起外源性产褥感染的最强致病菌是（） A.金黄色葡萄球菌 B.支原体和衣原体 C.大

短文排序。下面是篇段落次序打乱的短文，请根据各段大意给短文重新排序（短文的第一段已给出）。

          Canada Geese (鹅) are large blue and white birds. When autumn arrives, they have to fly south where the

weather is warmer. The winters are so cold in Canada that the birds died if they stay there. Here's a story about

some Canada Geese.

         (A) When he arrived back home, Bill found the geese waiting for him. They had found their way home

without him!

         (B) He had a small plane and he decided to teach them to follow him. Last summer, he went on shorts

trips in his plane and the young geese flew after him.

         (C) This spring, Bill was waiting for the birds to come back. They didn't arrive, so Bill flew to Virginia

(弗吉尼亚) to get them. He looked for them for two weeks but he couldn't find them. So he had to fly home. 

        (D) Bill Lishman is a farmer who loves birds. Last spring, he found sixteen young Canada Geese on his

farm. They had lost their parents. Bill thought, "These young birds won't know what to do in the autumn. I will

do something to help them."

       (E) When it became cold last autumn, Bill flew to Virginia in the United States, 600 miles south of his home

in Canada. The geese followed him all the way. Bill left the geese in Virginia and returned home.

1. ______ 2. ______ 3. ______ 4. ______ 5. ______

在下面算式中的□里填入相同的数，使得22.5-（□×32-24×□）÷3.2=10．这个数应是______．

（）只是一道阻止有害物进入人体的屏障，只能作为一种辅助性措施。

A、变更工艺 

B、个体防护 

C、替代

产品在形成中存在着两种运动过程：（）。

A.产品实现过程

B.物流

C.信息流

D.支持过程

低温水泵突然停泵的因素有（）。

A.水位超高

B.空压机超压

C.空分塔压力低

D、空气进口阀突然关闭