制动液压系统进行必需的修理后,以下哪种情况不要求对制动液压系统进行冲洗()
A.制动液含有水分;
B.系统内渗有空气;
C.制动液内有细小脏微粒;
D.制动液用错型号。
参考答案:B
Lucy is ill. She has ______ a bad cold for several days.[ ]
A. got
B. taken
C. caught
D. had
《伤寒论》“衄家不可发汗”之戒是哪种理论的实际应用
A.气能行津B.气能生血C.气能摄血D.津血同源