机车轮对采用锥型踏面的,轮缘厚度在距踏面基线向上H距离处测量应为()。
A、30~23mm
B、32~23mm
C、33~23mm
D、33~22mm
参考答案:C
如果内科药物治疗有效,但间断发作,则可以选择外科治疗,术中:
A.妊娠高血压综合征性心脏病B.颅内出血C.胎盘早剥D.胎儿感染E.胎儿畸形
用所给词的适当式填空
小题1:What does (Tony) father do? He’s a doctor.
小题2:The boy enjoys (take) buses.
小题3:It often (rain) in our city.
小题4:Lisa (not listen) to Mr Green now.
小题5:The city park is a good place (visit).
小题6:The lion is only ten (month)old.
小题7:There (be) a teacher and some students in the classroom.
小题8:My mother often (relax) two hours in the afternoon.
小题9:You can (visit) there by bike.
小题10:How many (country) do you know?