治疗心力衰竭使用血管扩张剂的作用是
A．增加心肌收缩力B．加强利尿C．减轻血钠D．加快血流速度E．减轻心脏前后负荷
参考答案：E
商业银行向客户直接提供资金支持，这属于商业银行的( )。
A．授信业务
B．受信业务
C．表外业务
D．中间业务
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
