巷道中心控制是利用三点联线方法。

题型:判断题

问题:

巷道中心控制是利用三点联线方法。

考点:煤矿巷修工考试巷修工高级巷修工高级题库
题型:判断题

B Customs of Bulgaria: Marriage and Family保加利亚习俗:婚姻与家庭
The average age for women to marry is between 18 and 25.25 tend to (1) when somewhat older. A church wedding often (2) the legal civil ceremony, and a large reception, which often involves (3) music and dancing, is held in the evening. Wedding traditions include (4) money on the bride’s dress to represent future prosperity, the groom (5) the bride at her home, and the couple pulling on opposite (6) of a loaf of bread—whoever gets the largest piece will be (7) boss of the family. Honeymoons are a new tradition.
The principle (8) mutual support is valued in the Bulgarian family. The elderly are (9) cared for by their adult children. Unmarried adults live with their (10) and many newly married couples live with one set of parents (11) they are able to get housing of their own. Most families (12) urban areas live in apartments, which are in short
supply, while (13) in rural areas usually have their own houses. Many village houses (14) owned by families who live in urban areas, who use them_ (15) summer and weekend retreats, or for retired parents.
Most families in (16) areas do not have more than two children, while families in (17) areas tend to be larger. Grandparents play an important role in (18) care, particularly in urban areas, where most women work outside the (19) . Men of the younger generation have begun to help with household (20) , once considered only women’s responsibility.

题型:判断题

水轮机型号选择是在已知()的情况下进行的。

A.机组容量和水头范围

B.机组容量和最大水头

C.机组容量和最小水头

题型:判断题

如题图所示的承重墙梁,各部分尺寸见题表,托梁混凝土强度等级为 C20,纵向受力钢筋采用HBB335,砖强度为MU10,水泥砂浆强度等级采用M5,荷载设计值Q1=23.8kN/m,Q2=116kN/m。

计算弯矩系数αM,计算轴力系数ηn与下列()组数据最为接近。

A.αM=0.450,ηn=1.250

B.αM=0.432,ηn=1.430

C.αM=0.406,ηn=1.430

D.αM=0.485,ηn=1.336

题型:判断题

孕妇妊娠期子宫破裂多数发生在()

A.分娩期

B.分娩期或妊娠晚期

C.妊娠晚期

D.妊娠中期也可能发生

E.任何期都可能发生

题型:判断题

焊接组合梁腹板的计算高度h0=2400mm,根据局部稳定计算和构造要求,需在腹板一侧配置钢板横向加劲肋,其经济合理的截面尺寸是()。

A.-120×8

B.-140×8

C.-150×10

D.-180×12

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