寡头垄断厂商的产品（）。-我要搜题网

[单项选择]National Parks have more and more visitors each year. In the last ten years the number of campers using the camp sites has more than doubled. Camping as a family vacation has suddenly become extremely popular in America. It is a cheap way to travel; its simple pleasures are a pleasant change from hectic urban life; and it can be enjoyed by children of all ages.
In car trunks or in racks on top of cars, families load a tent, sleeping bags, inflatable mattresses, cooking pans and eating utensils, and an ice chest for storing food. When they arrive at a camping ground they find a cleared space in which to pitch their tent, a fireplace for cooking, and usually a picnic table and benches--water and firewood nearby. By evening they are settled under the stars, the campsite around them dotted with lights from cooking fires and lanterns hung from trees.
Vacations are not all in resorts or in the wilderness. Swarms of vacationing Americans visit New York and Washington each year. They
A. Very great and exciting city.
B. Very wide avenues.
C. Great skyscrapers.
D. Beautiful skyline and shorelin

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[单项选择]To strengthen a friendly relationship, people ______.
A. must hold friendship ceremonies
B. have to eliminate differences in background
C. should make friends with those who are of the same age and of the same race
D. should support and understand each other through shared experiences and emotions

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[单选题]电能计量装置的二次回路变动时，应按经审批后的图纸进行，无用的接线应隔离清楚，防止误拆或产生（）。
A.寄生回路
B.保护误动
C.保护拒动
D.接地短路

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[单选题]用系统命名法命名化合物应叫()。
A.无法命名
B.B.2,2-二甲基-5-乙基-3-己烯
C.2-乙基-5，5-二甲基-3-己烷
D.2,2,5-三甲基-3-庚烯

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[单项选择]男性，18岁。偶然摸到右股下段质硬肿物，无疼痛，X线片示骨性肿物白干骺端向外侧突出，有一狭窄基底与骨皮质相连。
该患者的诊断是
A. 骨软骨瘤
B. 骨巨细胞瘤
C. 骨肉瘤
D. 骨瘤

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[多选题]在5级及以上的大风以及（）沙尘暴等恶劣天气下，应停止露天高处作业。
A.暴雨
B.雷电
C.冰雹
D.大雾

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[单项选择] Is it possible to persuade mankind to live without war War is an ancient institution which has existed for at least six thousand years. It was always bad and usually foolish, but in the past the human race managed to live with it. Modern ingenuity has changed this. Either Man will abolish war, or war will abolish Man. For the present, it is nuclear weapons that cause the most serious danger, but bacteriological or chemical weapons may, before long, offer an even greater threat. If we succeed in abolishing nuclear weapons, our work will not be done. It will never he done until we have succeeded in abolishing war. To do this, we need to persuade mankind to look upon international questions in a new way, not as contests of force, in which the victory goes to side which is most skillful in killing people, but by arbitration in accordance with agreed principles of law. It is not easy to change very old mental habits, but this is what must be attempted. There are those who say that t
A. worse than in the past
B. as bad as in the past
C. not so dangerous as in the past
D. as necessary as in the past

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[判断题]牵出线、走行线、咽喉道岔区，禁止停放机车车辆。
A.正确
B.错误

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[单项选择]临终关怀的目的是（）。
A. 治疗疾病
B. 延长生命
C. 实现无苦而终
D. 力求起死回生
E. 促使生命早日结束

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[多选题] "列车制动系统可以实现以下哪些功能( ) 。
A. 常用制动
B. 紧急制动
C. 保持制动
D. 载荷补偿"

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[多选题]监控员岗位职责有（）。
A.协助司机瞭望、监控速度表
B.提醒司机按规定速度运行
C.必要时立即按压紧急停车按钮
D.协助司机“互锁解除”及“开关站台门”

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[不定项选择题]A.补肾壮骨
A.健脾益肺，调和营卫
B.健脾助运，平肝息风
C.平肝潜阳
D.温脾助运
E.佝偻病活动初期肺脾气虚证治则是( )

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[单项选择]男性，27岁，3年前患肺结核，近2天半受凉后突然发热39℃，伴胸痛、咳嗽来住院，胸片示：右上肺条索状阴影，左下肺野大片淡薄阴影，首选药物是
A. 红霉素
B. 青霉素
C. 阿霉素
D. 黄连素
E. 两性霉素