DN200的初期上机使用次数为（）次。A、100—150B、100—200C、200

信用保证保险实际上是由保险人为信用关系中的()提供信用担保的一类保险业务。

A.权利人

B.义务人

C.保证人

D.中介人

Speaker A: If I were you, I'd ride a bike to work. Taking a crowded bus during rush hours is really terrible.Speaker B: ______

A．Yeah, riding a bike is a healthful activity. Don't you think

B．Yes, you're right. Buses are always very crowded during the rush hours.

C．Thank you for your advice. But my bike has got a flat tyre.

D．Certainly. I don't see Why so many people go to work by bus rather than by bike.

中毒现场的急救方法是什么？

在执业过程中知晓的他人的秘密，不得无故泄漏是

A．执业药师的权力
B．执业药师的义务
C．执业药师执业行为规范
D．执业药师的责任
E．执业药师职业道德准则

在北方果树上为害果树叶片、果实和枝干的害虫种类主要有哪些？