应用在我公司有齿轮电梯上的上行超速保护装置的触发信号是限速器的()开关。
参考答案:上行超速
贫血病人的临床表现与下列哪项因素无关()
A.血红蛋白的浓度
B.患病的年龄大小
C.白细胞的数量
D.贫血进展的速度
E.是否合并心肺疾病
用所给单词的正确形式填空 (10%)
小题1:How long have you been _______ (collect) shells?
小题2:I was _______ (annoy) by his bad manners.
小题3:Why don’t you ______ (buy) a calendar for her?
小题4:Have you ever ______ (be) to Disneyland?
小题5:There is nobody in the classroom, ______ (be) there?