转向架按弹簧悬挂装置分类可分为____________和____________两类。
参考答案:一系弹簧悬挂、二系弹簧悬挂
小题1:I want (61) (参加) the singing competition. (take)
小题2:Doctors are confident that the child (62) (将会健康成长). (grow)
小题3:—This dress is so beautiful. Why don't you buy it?
—I (63) (已用完) my money. (run)
小题4:—When shall we have the sports shows?
—Any day next week, (64) (因为它取决于) the weather. (depend)
小题5:—What should we do about the trash?
—It (65) (必须带走) when you leave. (take)
甲类厂房与民用建筑的防火问距不应小于25m,与重要公共建筑的防火间距不应小于50m,与明火或散发火花地点的防火间距不应小于()m。
A.20
B.30
C.35
D.50