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【多选题】
下面选项中,属于聚合函数的是A.
avg ()
B.
length ()
C.
sum ()
D.
concat ()
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反馈参考答案：
举一反三
【简答题】利用涂料干燥或固化以后的不透水性来达到防水的目的屋面称为() A柔性防水屋面 B刚性防水屋面 C涂料防水屋面 D半柔半钢防水屋面
【简答题】故意的 adj. d________
【单选题】breach /briːtʃ/ n. 破坏;破裂;缺口 ; 违背 intentional adj. /ɪnˈtenʃənl/ 故意的 Listen to the monologue on computer security. Q: What has happened to a computer if it has been hacked?
A.
Someone has borrowed computer information.
B.
Someone has accidentally taken information.
C.
Someone has stolen information on purpose.
D.
Someone has stolen a computer.
【简答题】The speech was a d____attempt to embarrass the government. (adj.蓄意的,故意的)
【单选题】What does “meteorological experts ”mean in paragraph three?
A.
predictors
B.
witch
C.
weathermen
D.
a kind of Englishman
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