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Passage One At 8pm Beijing time on 25 June 2016, the tropical darkness over China’s Hainan province was temporarily banished by a blinding orange light. Accompanied by the thunderous roar of engines, a 53m-tall rocket pushed itself into the sky. An increasing number of Chinese rockets have launched in the past few years but this one was significant for three reasons. It was the first launch of the new Long March 7 rocket, designed to help the Chinese place a multi-module space station in orbit. It was the first liftoff( 发射 ) from China’s newly constructed Wenchang launch complex( 综合发射场 ), a purpose-built facility set to become the focus for Chinese space ambitions. And it was the first Chinese launch where tourists were encouraged to go along and watch. For a space program that has long been shrouded( 保密 ) in secrecy, it’s a major step. The Wenchang complex has been designed with large viewing areas, and in the sultry heat of that June night, tens of thousands of spectators stood cheering as the rocket began its 394km journey above the Earth and into orbit. “China is developing very rapidly into one of the major space players,” says Fabio Favata, head of the program coordination office at the European Space Agency’s (ESA) directorate of science. China is estimated to spend around $6 billion a year on its space program. Although that is almost $1billion more than Russia, it is still a fraction of the American space budget, which is around $40 billion a year. Despite its large budget, the US made only 19 successful space launches in 2013, compared with China’s 14 and Russia’s 31. With numbers like this, it is clear that China has arrived in space, and is set to become stronger. So do the Chinese want to take over space? Brian Harvey, a space analyst, believes the Chinese simply want to be seen as equals. “To use a Chinese phrase, I think they are wanting to bring their own mat to the table,” he says. “They are looking for equality, they want respect from the world’s space community.”
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【单选题】关于应力和内力的论述,以下说法正确的是
A.
内力与应力无关
B.
内力是应力的代数和
C.
应力是内力的平均值
D.
应力是内力的分布集度
【单选题】以下关于内力和外力的关系正确的说法是( )。
A.
内力增大,外力减小
B.
外力是由内力产生的
C.
内力可以随着外力的增大而无限制地增大
D.
内力随着外力的增大而增大,但当内力增加到一定限度时,杆件就会发生破坏
【单选题】使用高压锅灭菌时,打开排气阀的目的是( )。
A.
防止高压国内压力过高,使培养基成分受到破坏
B.
排尽锅内有害气体
C.
防止锅内过高,造成灭菌锅爆炸
D.
排尽锅内冷空气
【判断题】妇女怀孕之后,气血聚以养胎,营气不足,卫外不固,多汗而易于为虚邪贼风所感。
A.
正确
B.
错误
【多选题】哲学产生后一直存在着两个个基本派别的斗争。这两个基本派别指( )
A.
唯物主义
B.
形而上学
C.
唯心主义
D.
辩证唯物主义
【多选题】以下关于内容分析法的说法正确的是()
A.
内容分析法强调的是正确有效的分析推理能力
B.
内容分析法的本质是对文献内容所包含信息量及其变化的分析
C.
内容分析法的研究目的是根据数据对内容进行可再现的、有效的推断
D.
内容分析法的原理在于运用多种统计方法、推理等透过现象看本质
【多选题】哲学产生后一直存在着两个基本派别的斗争。这两个基本派别指 ( )
A.
唯物主义
B.
形而上学
C.
唯心主义
D.
辩证唯物主义
【单选题】使用高压锅灭菌时,打开排汽阀排气的目的是
A.
防止高压锅内压力过高,使培养基成分受到破坏
B.
排尽锅内有害气体
C.
防止锅内压力过高,造成灭菌锅爆炸
D.
排尽锅内冷空气
【单选题】下列关于内力正负号规定说法正确的是( )
A.
力矩以逆时针转动为正
B.
弯矩以使梁段上部受压,下部受拉为负
C.
轴力以拉力为正,压力为负
D.
剪力绕梁段顺时针转动,则为负
【单选题】使用高压锅灭菌时,打开排气阀的目的是( )。
A.
排尽锅内有害气体
B.
排尽锅内冷空气
C.
防止高压锅内压力过高,使培养基成分受到破坏
D.
防止锅内压力过高,造成灭菌锅爆炸
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