腹泻伴里急后重者可见于
A.急性细菌性痢疾B.伤寒C.副伤寒D.肠结核E.Crohn病
参考答案:A
以下有关负载电功率的说法正确的有()
A.负载的电功率表示负载在单位时间消耗的电能
B.负载的电功率表示负载在单位时间产生的电能
C.负载功率P与其通电时间t的乘积称为负载消耗的电能
D.负载功率P与其通过电流I的乘积称为负载消耗的电能
_______ cars when you cross the busy street. Which of the following is not OK? [ ]
A. Watch out for
B. Look out for
C. Watch over
D. Be careful of