当设计无要求时，轻型砌块墙在高度（）m处应设置钢筋混凝土圈梁。
A.2
B.3
C.4
D.5
参考答案：B
Nowadays, the children ______ the bad habit of turning on the TV as soon as they come back from school.
A．get off
B．get across
C．get through
D．get into
下述工件加工时哪一种（ ）采用顺铣方式较为适合。
