检查风扇皮带张紧程度时,皮带应能按下()mm距离为合格。
A、10~20
B、20~25
C、25~35
D、35~40
参考答案:A
关于颅咽管瘤的描述,不正确的是()
A.小儿及青年多见
B.80%为囊性
C.85%有钙化
D.均发生于鞍上
E.肿瘤边界清楚
小题1:Molly was singing at that time.(改为一般疑问旬)
________ Molly ________ at that time?
小题2:The Greens have worked in China for four years.(对划线部分提问)
________ ________ have the Greens worked?
小题3:Last year.we planted 110 trees.(改为现在完成时)
So far,we ________ ________ 110 trees.
小题4:Mary has learnt Italian before.(改为否定句)
Mary ________ ________ Italian before.
小题5:Mr. Smith has few friends,________ ________?(完成反意疑问句)