对重点管控的“三类”有限空间的能源介质管网图要明确标识()。A.气体和液体等物料种类

题型:单项选择题

问题:

对重点管控的“三类”有限空间的能源介质管网图要明确标识()。

A.气体和液体等物料种类、管道进出有限空间的位置、阀门或物料控制装置等

B.应急救援联系方式

C.人员姓名

D.单位名称

考点:看火工试题看火工试题题库
题型:单项选择题

已知ABCD是矩形,边长AB=3,BC=4,正方形ACEF边长为5,平面ACEF⊥平面ABCD,则多面体ABCDEF的外接球的表面积 ▲   

题型:单项选择题
下列多项式乘法中不能用平方差公式计算的是(   )
A.(a3+b3)(a3-b3B.(a2+b2)(b2-a2
C.(2x2y+1)2x2y-1)D.(x2-2y)(2x+y2
题型:单项选择题

选择与下列句中画线部份相同或相近的选项。

1. The Smiths are having dinner at home at the moment.

A. Mr Smith

B. Mrs Smith

C. The Smith family

D. Mr Smith and his son

2. Lucy does better in drawing than her twin sister.

A. is better for

B. is better at

C. is better to

D. is better in

3. —What do you often do after supper? 

    —I often watch TV.  But sometimes go out for a walk.

A. sometimes

B. sometime

C. at times

D. some time

4. All the children had a good time at Mark's birthday party.

A. help each other

B. enjoy themselves

C. had a wonderful time

D. have a big dinner

5. Den Yaping could play ping-pong when she was four.

A. at the age of four

B. four years later

C. for four years

D. four years age

题型:单项选择题

截瘫

题型:单项选择题

下列属于强度相对指标的是()。

A.绿地率

B.容积率

C.房屋空置率

D.人口净密度

E.建筑密度

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