加油站的火灾报警和通讯设施必须保证完好、有效。

根据短文内容，用适当的单词完成下面句子。

Dear Mike,

     We got your letter yesterday. Yes, we can visit you at Christmas. We thought to spend Christmas at

home, but now we are going to be with you. Jack will not be in school then. The weather in Chicago is

cold, but it doesn't matter. Sometimes we like the snow. We got our plane tickets. We will get to your city

on the 18th. We will stay with you for two weeks. Is that all right with you? We'll take our favourite

recipes (食谱), so we can have a nice Christmas dinner.

      See you soon . 

                                                                                                                                    Love

                                                                                                                                    Mom and Dad

1. This letter is from Mike's _________.

2. In Chicago, it is _________ now.

3. Mike has a brother called __________. He is in school now.

4. Mike's parents will go to his city by _________.

5. His parents will come back on _________ 31^st .

男性，45岁，有烃类化合物接触史，上呼吸道感染后出现急进性肾炎综合征表现，血中发现抗肾小球基膜抗体阳性，病理检查为新月体肾炎，新月体达65%，以细胞性新月体为主，诊断为原发性急进性肾炎1型，遂施以“强化治疗”，下列治疗中不属于“强化治疗”范围的是（）

A.肾上腺皮质激素冲击治疗

B.血浆置换治疗

C."四联治疗"

D.透析治疗

E.以上都不是

焊条药皮中常用稳弧剂是（）、（）及其化合物。

下面是关于AGP总线的叙述，其中错误的是( )。

A．APGl×模式、2×模式和4×模式的基本时钟频率(基频)均为66MHz(实际为66.66MH

B．APGl×模式每个周期完成1次数据传送，2×模式每个周期完成2次数据传送，4×模式每个周期完成4饮数据传送

C．APGI×模式的数据线为32位，2×模式的数据线为64位，4×模式的数据线为128位

D．AGP图形卡可以将系统主内存映射为AGP内存从而可以直接访问系统主存

油台装完油后为什么要采取静止一段时间才能进行其它作业？