木楼梯由踏步板、踢脚板、( )、休息平台、斜梁、栏杆及扶手组成,其构造形式有明步木楼梯和暗步木楼梯两种。
A.直角木
B.三角木
C.垫位木
D.斜角边
参考答案:B
David was extremely excited at the good news that he would get a chance to the Rock Club to see the great man he admired ___________.
A.in his honor
B.in the distance
C.in the shadow
D.in the flesh
患者男性,4岁,家长发现其喜近视。国际标准视力表检查双眼远视力为0.5,近视力检查为J3,眼部未见明显器质性病变。
患者最不可能的诊断是()
A.远视
B.近视
C.混合性散光
D.弱视
E.单纯远视散光