信用证按贸易进出口的不同可分为:()
A.跟单信用证
B.进口信用证
C.出口信用证
D.光票信用证
参考答案:B, C
解析:业务操作规范-外汇业务核算操作规程-第六章-第五节
The construct cobegin Statement1; Statement2; coend means Statement1 and Statement2 are to be executed in parallel. The only two atomic actions in this construct are loading thevalue of a variable and storing into a variable.For the program segment x:=0; y:=O; cobegin begin x:=l; y:=y+x; end; begin y:=2; x:=x+3; end coend Which of the following indicate(s) possible values for the variables when the segment finishes execution Ⅰ.x=1,y=2 Ⅱ.x=1,y=3 Ⅲ.x=4,y=6
A.Ⅰ
B.Ⅰ and Ⅱ
C.Ⅰ and Ⅲ
D.Ⅱand Ⅲ
()是将两工件端面始终压紧,利用电阻热加热至塑性状态,然后迅速施加顶锻压力(或不加顶锻压力只保持焊接时压力)完成焊接的方法。
A.焊条电弧焊
B.氩弧焊
C.埋弧焊
D.电阻对焊