左边表格加了哪一个属性后，会变成右边的细边框效果？ A: collapse:collapse; B: border-collapse:collapse; C: border-collapse:separate;

TheoldeconomicsystemintheSouthernStatesbeganto________,whentheConfederatearmywasdefeatedintheU.S.CivilWar.(collapse,destroy)

mary would like to display a collapsed section on her video catalog form, she has created a section buy when she display the form in the client the section always opens expanded. whichone of the following should mary do to collapse the section?（） A:  nothing. Sections always open expanded  B:  modify the section default properties to collapsed  C:  modify the form propenties to display all sections collapsed  D:  modify the section opened for reading property to auto-collapse

下列代码正确的是? decltype;(auto);x;|auto;a;{10}; decltype(a);y;|auto array[] {1.0, 2.0};|auto;f();{ ;;return;auto; }

History in South Africa is now taught differently because A: of the collapse of communism. B: of the collapse of rule by white people. C: teachers are better than before.

Auto CAD2010 属于下面哪一个版本系列（ ） A: Auto CAD R17 B: Auto CAD R18 C: Auto CAD R19 D: Auto CAD R20

若要单元格之间合并，则以下正确的是（ ） A: border-collapse:seprate B: border: seprate C: border-collapse:collapse D: border: collapse

下列代码正确的是 A: auto a {10}; decltype(a) y; B: decltype (auto) x; C: auto f() { return auto; } D: auto array[] {1.0, 2.0};

假设有auto func(){auto a = 2u; auto b = 3L; return a + b; }那么auto v = func(); v 的类型是_____。

Translate the sentence “It is not a collapse of everything into one thing” into Chinese.