在换路瞬间,电感元件的电压值有限时,其__________不能跃变。

题型:填空题

问题:

在换路瞬间,电感元件的电压值有限时,其__________不能跃变。

考点:自学考试高等教育自学考试全国2010年10月自学考试电工原理试题
题型:填空题

读“山东省2003年与2030年人口年龄结构比较图”,完成题。

小题1:2030年与2003年相比,下列说法中最可能出现的是

A.出生率上升

B.死亡率上升

C.人口总数下降

D.人口自然增长率上升小题2:今后山东省人口及社会状况可能出现的问题有

①就业压力大  ②养老负担重 ③适龄儿童入学困难 ④人力资源数量短缺

A.①②

B.③④

C.①③

D.②④

题型:填空题

由国务院根据宪法和法律制定的规范工程建设活动的各项法规为( )。

A.建设工程法律
B.建设工程行政法规
C.建设工程部门规章
D.建设工程单行条例

题型:填空题

Etiquette(礼节) is important at a Chinese dinner party. Usually, the host(主人) should politely ask the guests to be seated first before he sits down. If there is a speech, people stop eating and drinking to listen. Every time a dish is brought out, the host asks the guests to try it first. Guests would not start eating the dish until the host asks them to. While eating, people should stop often to talk for a while. Eating all the time without stopping is not polite, and could be laughed at. Usually, people do not finish a dish. A finished dish would suggest that there is not enough of the dish to eat, which may make the host embarrassed( 不好意思的), so people would not usually pick up the last piece off a plate. During a meal, the host asks the guests again and again to eat and drink more. Without this, some people may feel embarrassed about how much they eat. From time to time, people pick up food to give it to those sitting beside them. The host keeps the guests company all the way through the dinner. He would not finish until all the guests do so.

The host is not polite if he sits down at the table before the guests do so.
[A] Right.[B] Wrong. [C] Doesn’t Say.

题型:填空题

()是国家长治久安的根本途径。

A.秉公执法

B.一切依靠人民

C.程序公正

D.执法公开

题型:填空题

在可变容积式压力调节器中,保压时,电磁线圈无电流通过。()

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