【单选题】题: 按GB/T272-93规定,既承受径向力,又承受单向轴向力时,通常应成对使用的滚动轴承的类型代号是()
【单选题】The teacher saw all this, so she asked the boy ______.
A.
to go on writing his paper
C.
to leave the room immediately
D.
to stay behind after the exam
【单选题】常用于O/W型乳剂型基质的乳化剂的是( )
【单选题】She saw the boy __________ by a snake.
【简答题】在字符匹配查询中,通配符“%”代表任意多个字符,“_”代表___。
【单选题】What did the small boy think when he saw tears in his teacher's eyes?
B.
She didn't like school.
C.
There was something wrong with her eyes.
【简答题】在字符匹配查询中,通配符“%”代表_______。
【多选题】金融创新带来了新的风险,除增加了金融机构的经营风险和投机风险外,还带来了以下新的风险,即()。
【简答题】在字符匹配查询中,通配符“ % ”代表 ,“ _ ”代表 。