二氧化碳灭火剂的主要灭火作用是什么？-我要搜题网

[填空题]
{{B}}A: Spot Dictation{{/B}}
Direction: In this part of the test, you will hear a passage and read the same passage with blanks in it. Fill in each of the blanks with the words you have heard on the tape. Write your answer in the corresponding space in your ANSWER BOOKLET. Remember you will hear the passage ONLY ONCE.

The Asian {{U}} (1) {{/U}} has taken its toll on Hong Kong’s tourist industry, {{U}} (2) {{/U}} of foreign exchange for the area. VOA Hong Kong correspondent reports on the government’s efforts to revitalize {{U}} (3) {{/U}} of the territory’s economy.
Hong Kong has been searching for ways to boost its {{U}} (4) {{/U}} tourist industry. Efforts to lift the territory’s ailing sector {{U}} (5) {{/U}} after the government appointed Mike Rouse as its {{U}} (6) {{/U}} commissioner for tourism. Mr. Rouse says in order to {{U}} (7) {{/U}} tourism, the gov

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[单项选择]普萘洛尔禁用于哪种病症
A. 阵发性室上性心动过速
B. 原发性高血压
C. 稳定型心绞痛
D. 变异型心绞痛
E. 甲状腺功能亢进

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[单选题]498.为保证较好的综合力学性能，对轴、丝杠、齿轮、连杆等重要零件，一般采用的热处理方式是（）。
A.淬火
B.正火
C.退火
D.调质

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[单项选择]胃肠道手术后，开始进流质饮食的时间是（　）
A. 体温在37.5℃以下
B. 病人思食
C. 恶心、呕吐消失后
D. 肛门排气后
E. 腹痛消失后

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[多选题]《关于进一步加强全省农商银行存量贷款管理的意见》中提出，结合六分类体系与货款情况，将存量公司类客户划分为（），分别实施支持、维持、压缩、退出的信贷策略。
A.优质客户
B.一般客户
C.潜在风险客户
D.事实风险客户

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[判断题]冻结功能为案件立案并经初查后,对嫌疑人账号的处置。故需录入相关的案件编号。
A.正确
B.错误

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[单项选择]鼻窦毛霉菌病治疗原则是（）
A. 清除鼻窦病灶，抗生素预防合并感染
B. 清除鼻窦病灶，窦口充分引流
C. 广泛去除局部坏死组织；全身应用抗真菌制剂
D. 鼻腔局部用皮质激素和抗真菌药
E. 静脉点滴大剂量抗真菌药物

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[多项选择]市场经济运行中调节经济活动的主要手段是（）。
A. 价格
B. 工资
C. 利润
D. 汇率

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[单项选择]We may look at the world around us, but somehow we manage not to see it until whatever we’ve become used to suddenly disappears. (36) , for example, the neatly-dressed woman I (37) to see-or look at-on my way to work each morning.
For three years, no matter (38) the weather was like, she was always waiting at the bus stop around 8:00 am. On (39) days, she wore heavy clothes and a pair of woolen gloves. Summertime (40) out neat, belted cotton dresses and a hat pulled low over her sunglasses. (41) , she was an ordinary working woman. Of course, I (42) all this only after she was seen no more. It was then that I realized how (43) I expected to see her each morning. You might say I (44) her.
"Did she have an accident Something (45) " I thought to myself about her (46) . Now that she was gone, I felt I had (47) her. I began to realize that part of our (48) life probably includes such chanc
A. Clearly
B. Particularly
C. Luckily
D. Especially

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[单选题]权值是路由器通过路径选择算法为网络上的路径产生一个数字。
A. 对
B. 错

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[单选题]电缆支架应安装牢固，横平竖直,托架支吊架的固定方式应按设计要求进行。各支架的同层横档应在同一水平面上，其偏差不应大于（）。
A.5mm
B.10mm
C.15mm
D.20mm

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[单选题] 酸性气阻火器发生堵塞,修理前要经过处理的作用是( )。
A.防止发生自燃
B.吹扫出阻火器内垃圾
C.防止硫化氢中毒
D.防止胺中毒

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[单项选择]

More than three years after moving from Australia to this remote part of England, we are still learning how things are done here.
Not too long after we arrived and unpacked, we were invited for "a drink on Sunday morning" by a retired couple nearby. We got there about noon, to find the living-room crowded—lots of chat and discussions, and on all a very jolly occasion.
Trouble was, there was no food—no self-respecting Australian would regard a tray of crisps as food. In Sydney, when you are invited for a drink any time after midday on a Sunday, you know you will be fed as well as watered and you plan accordingly. Meaning the hard-worked little woman makes no plans to cook lunch because you are eating out.
By one-fifteen my stomach was sending up "please explain" to me. Even the crisps had gone. There was nothing we could do except wait, an
A. (A) expected to be served a proper dinner
B. (B) arrived on the wrong evening
C. (C) interpreted the invitation correctly this time
D. (D) realized there was no dinning-room in the cottage

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[单选题]7．（）是指通过各种监控技术，动态捕捉风险指标的异常变动，判断其是否已达到引起关注的水平或已超过阈值。
A. 风险识别
B. 风险计量
C. 风险监测
D. 风险控制

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[判断题]采煤工作面和掘进工作面都应采用独立通风。
A.正确
B.错误

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[单选题]各单位每年要将（）内容纳入相关培训班进行贯宣学习，强化安全红线日常学习，确保全体干部职工熟悉并掌握安全红线内容。
A.安全知识
B.安全规章
C.安全条例
D.安全红线

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[判断题]营业厅部分施工，容易出现客户误入的区域由保安负责看管，以防客户误入施工现场后出现意外。
A.正确
B.错误

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[单选题]鼠笼式异步电动机,当电源电压不变,仅仅是频率由 50 Hz 改为 60Hz 时,( )。
A.额定转速上升,最大转矩增大
B.额定转速上升,最大转矩减小
C.额定转速不变,最大转矩减小

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[单选题]远方遥控操作继电保护软压板，至少应有（　　）指示发生对应变化，且所有这些确定的指示均已同时发生对应变化，方可确认该压板已操作到位。
A. A.两个
B.B.三个
C.C.四个
D.D.一个

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[简答题]请解释什么叫轧制、热轧、后滑？

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[判断题]机器是构件之间具有确定的相对运动、并能完成有用的机械功或实现能量转换的构件的组合。( )
A.正确
B.错误

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[单选题]. 目前梨果皮颜色的理想育种方向是( )。
A. 红色
B. 褐色
C. 黄色
D. 棕色

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[简答题]二氧化碳灭火剂的主要灭火作用是什么？

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