人工流产时下列哪种情况不易发生子宫穿孔()
A.哺乳期子宫
B.剖宫产术后
C.子宫过度倾屈
D.按照操作规程
E.马鞍子宫
参考答案:D
—-Look at the timetable. Hurry up! Flight 4062 ______off at 18:20.
— I will.
A.takes
B.took
C.will take
D.has taken
电除尘器拔销轴在锤臂的接触面宽度不得超过(),否则应调整。
A.4/5;
B.1/2;
C.1/3;
D.1/4。