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【单选题】
20世纪70年代以后,环境微生物学得到了飞速发展,下列选项中不属于主要原因的是:
A.
工农业生产发展导致了污染物的种类和数量迅猛增加
B.
微生物中存在多数病原体,或产生毒性物质对人群的危害
C.
分子生物学手段的快速发展,提供鉴定和分析微生物的有效手段
D.
包括远古微生物作用产生的石油等化石燃料大量燃烧,导致全球气候变暖
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【简答题】swarming growth phenomenon
【简答题】群浮swarming
【单选题】根据主、俯视图,分析相邻表面的连接关系,选择正确的左视图( )。
A.
A
B.
B
C.
C
D.
D
【单选题】Come September, the campuses of America will be swarming not just with returning undergraduates, but also with employers set on signing up the most able 10% of them. 'We are seeing a far more competit...
A.
The universities play a minor role in helping their graduates to find a job.
B.
Nowadays undergraduates can get a decent job much easier than before.
C.
The companies spend more money than before in recruitment.
D.
The competition between talents scratching is fiercer.
【单选题】与普通货轮的辅锅炉对比,大型油船辅锅炉的——较大,所以对水位和蒸汽压力的控制要求也较高。
A.
燃烧量和容积
B.
蒸汽压力和蒸发量
C.
燃油黏度和蒸汽压力
D.
负载和用汽量
【单选题】Psycholinguistics, as a (an)_________ of cognitive science has seen an enormous growth.
A.
major field
B.
sub-field
C.
irrelevant field
D.
superior field
【单选题】Come September, the campuses of America will be swarming not just with returning undergraduates, but also with employers set on signing up the most able 10% of them. 'We are seeing a far more competit...
A.
The universities play a minor role in helping their graduates to find a job.
B.
Nowadays undergraduates can get a decent job much easier than before.
C.
The companies spend more money than before in recruitment.
D.
The competition between talents scratching is fiercer.
【单选题】下列选项属于b旋律小调中属音的是
A.
B.
C.
D.
D
【多选题】奥氏体的形核需要满足什么条件
A.
能量起伏
B.
结构起伏
C.
浓度起伏
D.
成分过冷
【单选题】大型油轮辅锅炉的蒸发量比较大,蒸汽压力高,一般需要压力稳定,通常采用( )控制方案。
A.
程序
B.
随动
C.
定值
D.
比例微分
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