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【单选题】
下列关于机械循环供暖系统的描述,错误的是_____________。A.
水平串联系统中，设计考虑补偿水平管道的热胀
B.
系统较大时，宜采用同程式系统，以便于压力平衡
C.
单管系统中，重力循环作用压力可以不予考虑
D.
为了满足室温要求，单管系统可加跨越温控阀
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【单选题】(Para. 6) Since then he has spent the summer “hiding”. He can recount several episodes of Traffic Cops and has seen more daytime television than is healthy. He talks to his friends about his aimless d...
A.
They do nothing all day and go to the pub in the evening.
B.
They do outdoor activities such as sailing.
C.
They are forced to work by their parents.
D.
They do part-time jobs such as working in a bar.
【简答题】(Para. 6) Since then he has spent the summer “hiding”. He can recount several episodes of Traffic Cops and has seen more daytime television than is healthy. He talks to his friends about his aimless d...
【单选题】(Para. 6) Since then he has spent the summer “hiding”. He can recount several episodes of Traffic Cops and has seen more daytime television than is healthy. He talks to his friends about his aimless d...
A.
Doing a temporary job.
B.
Watching television.
C.
Queuing up in the university careers service.
D.
Preparing for the next job interview.
【单选题】明朝朱元璋认为宰相多 “专权乱政”而废宰相,立铁牌“内官不得干预政事”于宫门内,但明朝权臣乱政、宦官专权现象仍屡禁不止,究其根源在于
A.
中央集权不断强化的结果
B.
君主专制极端强化的结果
C.
君主专制达到顶峰的弊端
D.
票拟权和批红权不断下移
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