镗削加工开始时,应用()进给,使刀具接近加工部位时,再用()进给
A.手动、机动
B.机动、手动
C.机动、机动
D.手动、手动
参考答案:A
Nowadays everything strange is____strange. That is to say, any unexpected ____thing is possible to happen.
A.something
B.anything
C.nothing
D.everything
小明因车祸进了医院,医生说他要立即输血.通过检验发现小明的血型是A型,那么适合输给小明的血型有几种( )
A.1种
B.2种
C.3种
D.4种