使冠心病病人术中氧耗增加的因素不包括()。
A.高血压
B.低血压
C.心动过速
D.高热
E.寒战
参考答案:B
按GB7588规定,插座根据GB3805的规定,以安全电压供电。试说明什么是安全电压?
The English spoken in the United States is only slightly different from ____spoken in England.
A.which
B.what
C.that
D.the one