液压系统滑阀修后的粗糙度应不大于Ra0.16。

题型:判断题

问题:

液压系统滑阀修后的粗糙度应不大于Ra0.16。

考点:农机修理工考试农机修理高级工农机修理高级工题库
题型:判断题

近代列强发动了多次侵华战争,其中攻占过北京的是 

①第一次鸦片战争   

②第二次鸦片战争   

③甲午中日战争    

④八国联军侵华战争

A.①②

B.②④

C.①③

D.③④

题型:判断题

.----Is she older than you?

-----Yes, she is older than I ___ three years.

A.for

B.by

C.in

D.on

题型:判断题

(二)背景资料某施工单位承包浇筑跨海大桥大型混凝土承台施工。该承台的平面尺寸为10m×10m,承台顶标高为+3.5m,底标高为-0.5m,12根直径1.2m的钢管桩伸入承台混凝土2m,桩芯混凝土已浇筑完成。工程所处海域属规则半日潮,周期为12h25min。施工时高潮位+2.5m,低潮位-1.5m,现要求用非水密模板乘低潮浇筑承台,封底混凝土0.8m厚。施工中采用有效生产能力为80m3/h的混凝土拌和船供应混凝士,混凝土入模、振捣等操作时间为0.5h。

事先要安排怎样的试验项目,获取满足乘低潮位浇筑所需的一项必要的指标数据(计算中取该指标为1.5h)。

题型:判断题

People in the United States honor their parents with two special days:Mother's Day, on the second Sunday in May, and Father's Day, on the third Sunday in June.These days are set aside to show love and respect for parents.They raise their children and educate them to be responsible(有责任感的) citizens.They give love and care.These two days make us think about the changing roles of mothers and fathers.More mothers now work outside the home.More fathers must help with child care.

These two special days are celebrated in many different ways.On Mother’s Day people wear carnations.A red one symbolizes a living mother.A white one shows that the mother is dead.Many people attend religious services to honor parents.It is also a day when people whose parents are dead visit the cemetery(墓地).On these days families get together at home, as well as in restaurants.They often have outdoor barbecues for Father's Day.These are days of fun and good feelings and memories.

Another tradition is to give cards and gifts.Children make them in school.Many people make their own presents.These are valued more than the ones bought in stores.It is not the value of the gift that is important, but it is “the thought that counts”.Greeting card stores, florists, candy makers, bakeries, telephone companies, and other stores do a lot of business during these holidays.    

小题1:Which is NOT a reason for children to show love and respect for parents? 

A.Parentsbringchildren

B.Parentsgiveloveandcaretochildren

C.Parentseducatechildrentobegoodpersons.

D.Parentspassawaybeforechildrengrowup小题2:What do you know from the passage? 

A.Mother’sDayandFather’sDayarebothinMay.

B.Fewerwomenworkedoutsidethehomeinthepast

C.Notallthechildrenrespecttheirparents

D.Fathersarenotasimportantasmothersathome小题3:Which do you think is right about “carnation”?

A.It has only two kinds of colors.

B.It refers to the special clothes people wear on Mother’s Day or Father’s Day.

C.People can wear carnations only on the second Sunday in May.

D.It’s a kind of flower showing love and best wishes.小题4:On Mother’s Day and Father’s Day, _______.

A.everyone goes to visit the cemetery

B.people usually have family parties

C.children always go to parents’ home

D.hand-made cards are the most valuable gifts

题型:判断题

旅客的人身伤亡因发生在民用航空器上或者在旅客上、下民用航空器过程中的,承运人应当承担责任。

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