施加制动时,轻踩踏板即踩到底,下面哪项不会导致此故障?()
A.制动蹄片超出调整范围
B.缺少制动液
C.制动总泵磨损
D.感载比例阀磨损
参考答案:D
The Harry Potter books are quite popular; they are in great ___ in this city. [ ]
A. quality
B. progress
C. production
D. demand
女,26岁,平素月经规律。停经48日, * * 少量流血5日,偶有腹痛。检查见宫颈软,宫体稍大且软,附件无异常。
本例最可能的诊断为()
A.异位妊娠
B.功能失调性子宫出血
C.子宫肌瘤
D.先兆流产
E.葡萄胎