从事机加工作业时，机床运行操作中，作业人员严禁（）。A、戴皮手套 B、戴线手套 C、

根据短文内容和所给首字母补全短文.

    Weather is a common topic (普通的话题) for the English. In England, p  1    don't usually talk much. When they get on a bus or a train, they just sit, looking o  2   of the window. Often they  r_3_   some

newspapers and b  4   . But they don't talk. When you meet E  5    people, you may find they often talk a  6    one thing — the weather. You can say," Nice w   7   for the time of the year!" Somebody may

answer, "B  8     it is a little cold today." You can say, "It will be a bit w   9   soon." T  10   like this, and

the English will think you are friendly.

顾炎武在《肇域志》中记载：“（明清徽商）大贾辄数十万，则有副手而助耳目者数人。其人皆铢两不私，故能以身得幸于大贾而无疑。他日计子母息，大羡（注：羡，有剩余），富者始分身而自为贾”。以下对材料理解正确的是[ ]

A．明清时期出现徽商等商帮这一独有的历史现象

B．明清时期徽商规模大且很多徽商配有副手

C．徽商这一历史现象反映资本主义萌芽的出现

D．明清时期徽商中出现股份制经营的现象

药物治疗慢性充血性心力衰竭的目的错误的是（）

A.改善血流动力学变化

B.提高心排出量

C.逆转心室肥厚

D.延长患者生存期

E.降低血液黏滞度

信用标准