试题与答案

铅酸蓄电池极板硫化的原因之一是()。A.电解液内含有杂质 B.正常浮充电流过大 C.

题型:单项选择题

题目:

铅酸蓄电池极板硫化的原因之一是()。

A.电解液内含有杂质

B.正常浮充电流过大

C.蓄电池内部短路

D.电解液中缺少氢氧化锂

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0518/8e1187d83ab910a9f4f6ecca096b1043.html

下面是错误答案,用来干扰机器的。

(70+60)×6,=130×6,=780(米);答:她们两家相距780米.

试题推荐
题型:单项选择题

The Frugal Gourmet Cooks American by Jeff SmithOur real American foods have come from our soil and have been used by many groups — those who already lived here and those who have come here to live. The Native Americans already had developed an interesting cuisine using the abundant foods that were so prevalent.The influence that the English had upon our national eating habits is easy to see. They were a tough lot, those English, and they ate in a tough manner. They wiped their mouths on the tablecloth, if there happened to be one, and they ate until you would expect them to burst. European travelers to this country in those days were most often shocked by American eating habits, which included too much fat and too much salt and too much liquor. Not much has changed! And, the Revolutionists refused to use the fork since it marked them as Europeans. The fork was not absolutely common on the American dinner table until about the time of the Civil War, the 1860s. Those English were a tough lot.Other immigrant groups added their own touches to the preparation of our New World food products. The groups that came still have a special sense of self-identity through their ancestral heritage, but they see themselves as Americans. This special self-identity through your ancestors who came from other lands was supposed to disappear in this country. The term melting pot was first used in reference to America in the late 1700s, so this belief that we would all become the same has been with us for a long time. Thank goodness it has never worked. The various immigrant groups continue to add flavor to the pot, all right, but you can pick out the individual flavors easily.The largest ancestry group in America is the English. There are more people in America who claim to have come from English blood than there are in England. But is their food English Thanks be to God, it is not! It is American. The second largest group is the Germans, then the Irish, the Afro-Americans, the French, the Italians, the Scottish, and the Polish. The Mexican and American Indian groups are all smaller than any of the above, though they were the original cooks in this country.

Which of the following statements is true

A.People from other cultures or nations start to lose their self-identity once they get settled down in America.

B.The "melting pot" is supposed to melt all the foods but in reality it doesn’t.

C.The special sense of self-identity of people from other countries can’t be maintained once they become Americans.

D.The "melting pot" finds it capable of melting all the food traditions into the American tradition.

查看答案
题型:单项选择题

某多层钢筋混凝土框架结构房屋,9度设防烈度,抗震等级一级。底层框架柱,截面尺寸700mm×700mm,柱净高Hn=5100mm。C30混凝土,纵向钢筋用HRB400级、箍筋用HRB335级钢筋,纵筋的混凝土保护层厚度30mm。地震作用组合后并经内力调整后的设计值:N=4088kN,柱上端弯矩值,柱下端弯矩值。柱的反弯点在层高范围内。

经计算,该柱为大偏心受压柱,柱的纵向钢筋对称配筋,一侧配置。由重力荷载代表值产生的柱轴向压力设计值N=3050kN,试问,该柱的剪力设计值Uc(kN),与下列何项数值最为接近()。

A.790

B.870

C.910

D.950

查看答案
微信公众账号搜索答案