两等值电阻组成串联电路时的电阻是组成并联电路时的电阻的______倍.

题型:填空题

问题:

两等值电阻组成串联电路时的电阻是组成并联电路时的电阻的______倍.

考点:电阻的串联电阻的并联
题型:填空题

判断正误,正确的写"T", 错误的写"F"。

  I am very excited to get to know Xu Wei,a 21-year-old college student who

lives in Guangxi,China. He chooses English as his major because English is a

very important subject in Chinese school.

  I feel that I have gained a lot. I am really surprised to see the difference

between our lives, and yet how similar we are. I am happy to know that someone

far away can share the same opinions.

  I always think that the saying"It's a small world" is not true,and now I feel

so even stronger.The world is huge. There are so many great people out there

who we don't know. I hope to find out  as much asI can from them.I am pleased

with all that I have gained.

( )1. Xu Wei is a 21-year-old Chinese girl.

(     )2. Xu Wei's major is English.

(     )3. Someone far away can't have the same ideas.

(     )4."It's a small world"is not true in the writer's opinion.

(     )5. The writer feel sad from this experience.

题型:填空题

当采购在运行期内各种后续费用(备件、油料及燃料、维修等)较高的货物时,最好的评标方法应采用( )。

A.评分法

B.全寿命费用评标价法

C.综合评标价法

D.最低投标价法

题型:填空题

1950年中国人民志愿军入朝作战的主要原因是

A.美国侵略了我国的友好邻邦朝鲜

B.朝鲜民主主义共和国请求中国政府出兵

C.台湾乘朝鲜战争机会反攻大陆

D.美国的侵略活动严重地威胁了新中国安全

题型:填空题

俾斯麦企图建立一种特殊的德意志型的立宪议会制度,以达到保持普鲁士王朝政治统治优势之目的。这种设想在1871年统一的德意志帝国宪法中加以定型。下列能体现这一目的的正确选项是()

A.联邦议会由民选产生

B.帝国议会掌握着立法大权

C.宰相对联邦议会负责

D.帝国皇帝有主宰议会之权

题型:填空题

孟德尔运用假说-演绎法总结出了遗传学的两大规律,以下说法中属于假说的是()

①F1代全部显现高茎

②生物性状是由遗传因子决定的

③F2代既有高茎又有矮茎,性状分离比接近3:1

④体细胞中遗传因子成对存在

⑤受精时,雌雄配子随机结合

A.①③

B.②④⑤

C.①②③

D.①②③④⑤

更多题库