皮皮学，免费搜题
登录
搜题
【多选题】
的性质有哪些?A.
封闭的平面图形
B.
封闭的空间曲线
C.
是截平面和立体表面的共有线
D.
两个立体表面的分界线
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
【单选题】When I was in hospital, my mother promised me that she would take me to Qingdao ________ I was well enough to travels, which ________ my recovery. [ ]
A.
direct; contributed to
B.
directly; contributed to
C.
directly; refered to
D.
direct; refered to
【单选题】I will appreciate it you can change your plan a little bit to make it more workable.
A.
so
B.
if
C.
since
D.
although
【单选题】She promised to take my job immediately. That really took a big load my shoulders.
A.
away, down
B.
up, from
C.
over, off
D.
on, away
【简答题】使用游标的一般步骤应为:_______、_______、从游标的结果集中读取数据、对游标中的数据逐行操作、关闭游标和释放游标。
相关题目：