皮皮学，免费搜题
登录
搜题
【简答题】
板式楼盖的楼板分为单向板和双向板,板的长边尺寸L1与短边尺寸L2,当 L1/ L2 时称为单向板,当L1/ L2 时称为双向板。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【多选题】【重复】下列各项,属于外部清查的有( )
A.
企业上级主管部门进行的清查
B.
企业对全部资产进行的清查
C.
注册会计师进行审计时进行的清查
D.
企业对存货进行的清查
【单选题】When the red light is on, it's dangerous to go _______the street.
A.
across
B.
through
C.
cross
D.
to
【单选题】Look ______! The train is coming! It's dangerous to sit on the railway. [ ]
A.
in
B.
at
C.
out
D.
up
【单选题】His parents ask him _______ on the road because it's dangerous. [ ]
A.
to play
B.
not to play
C.
to not play
D.
playing
【简答题】补全对话 Sam: Don't sit on the chair! Alice: 1 Sam: Look! One of its legs is broken. It's erous to sit on it. Alice: Thank you for telling me. 2 Sam: I don't know. Alice: Let's tell our teacher about ...
相关题目：