【单选题】—My bike _______. May I go ______? —No problem!
C.
has broken down, on yours
D.
is broken, on yourself
【单选题】While I was skiing,I ______ and broke my wrist.
【单选题】( )是描述系统有哪些类和类之间的关系。
【单选题】My computer ______yesterday .I must get it repaired this afternoon.A.broke upB.broke outC.broke
A.
31. My computer ______yesterday .I must get it repaired this afternoon. A.broke up
【简答题】下列关于主索引和候选索引的叙述中,不正确的是( )。 A)主索引不可以通过INDEX命令建立,而候选索引可以 B)主索引和候选索引都能保证表记录的惟一性 C)主索引不可以建立在自由表上,而候选索引可以建立在自由表上 D)一个表中只能存在一个主索引或一个候选索引
【判断题】桥面铺装施工前,需要将水准点和导线点进行迁移或加密。
【单选题】—My bike ________. May I go ________? —No problem!
C.
was broken down, on yours
D.
is broken, on yourself
【判断题】listbox中选中索引的命令是selectedItem