等边形三角形是旋转对称图形,它的旋转中心是______,绕它的旋转中心至少旋转_

题型:填空题

问题:

等边形三角形是旋转对称图形,它的旋转中心是______,绕它的旋转中心至少旋转______后能与自身重合.

考点:图形旋转
题型:填空题

小题1:_____________ (luck), he found his lost key in the reading room.

小题2:It is reported that they ___________ (donate) 20 million yuan to China Red Cross since last year.

小题3:The TV play My Ugly Mother is well worth ______________ (see) again.

小题4:My sister said that the capital of China ____________( be) Beijing .

小题5:It’s much____________(excite) to surf the Internet for teenagers.

小题6:They have done what they can_________ us stop the sandstorm. (help)

小题7:Plants need CO2 when they grow , so they can make CO2_______________(little) in the air.

小题8:Do you know the two ____________ (thief) names?

小题9:Green can make you feel _______________ ( energy ).

小题10:Zhang Jike shouted with _____________ (excite) when he got the first prize in the World Table Tennis Championships(锦标赛) several days ago.

题型:填空题

宋内志贺菌有两个变异相,慢性患者或带菌者分离的菌株一般是()

A.Ⅰ相

B.Ⅱ相

C.Ⅰ相或Ⅱ相

D.Ⅰ相和Ⅱ相

E.以上都不对

题型:填空题

历史研究法的目的在于( )

A.解决政府行政管理的现状及其演变趋向
B.鉴别优劣、取长补短
C.发现行政管理的真正意义
D.了解自己的优点和缺点

题型:填空题

男性,24岁,因急性阑尾炎穿孔伴局限性腹膜炎,行阑尾切除术后5天,仍有腹痛,腹胀,体温38℃以上,大便3~5次/d,量少且有下坠感。血WBC18×109/L。

应首先考虑为()

A.切口感染

B.并发肠炎和菌痢

C.并发膈下脓肿

D.盆腔脓肿

E.化脓性门静脉炎

题型:填空题

40~41 已知钢筋混凝土过梁净跨ιn=3.0m,过梁上砌体高度1.2m,墙厚190mm,墙体采用 MU7.5砌块、Mb5混合砂浆砌筑,承受楼板传来的均布荷载设计值15kN/m。过梁伸入墙内200mm,砌块厚度为190mm,双面抹20mm混合砂浆,单位面积容重为3.38kN/m2(如 40-41图所示)。

题40~41图

该过梁下的局部承压承载力与()项数值最为接近。

A.49.2kN

B.50.5kN

C.65kN

D.67.3kN

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