井筒和巷道施工中通常采用特殊施工方法适用于（） A.软土层 B.松软破碎的岩层 C.

假设某一年基础货币为1000亿元，原始存款为500亿元，派生存款为300亿元，货币乘数为1.2，则货币供应量为( )。

A．600亿元
B．360亿元
C．1200亿元
D．2160亿元

战争带来灾难，牢记战争教训，维护世界和平。

（1）近代史上导致清政府北洋舰队全军覆没的战争是               。

（2）抗日战争中中国军队主动出击日军的最大规模战役是             。

（3）一战中最残酷的战役造成法德共伤亡70多万人，它是             。

（4）第二次世界大战的重要转折点是                       。

Prior to the UML, there was no clear leading (111) language. Users had to choose from among many similar modeling languages with minor differences in overall (112) power. Most of the modeling languages shared a set of commonly accepted concepts that are expressed slightly differently in various languages. This lack of (113) discouraged new users from entering the OO market and from doing OO modeling, without greatly expanding the power of modeling. Users longed for the industry to adopt one, or a very few, broadly supported modeling languages suitable for (114) usage.

Some vendors were discouraged from entering the OO modeling area because of the need to support many similar, but slightly different, modeling languages. In particular, the supply of add-on tools has been depressed because small vendors cannot afford to support many different formats from many different (115) modeling tools. It is important to the entire O0 industry to encourage broadly based tools and vendors, as well as niche products that cater to the needs of specialized groups.

（111）是（）

A.programming

B.modeling

C.formal

D.intelligent

合环操作调整电压差至最小，最大允许电压差为额定电压的（）。

A、0.05

B、0.1

C、0.15

D、0.2

油罐在进行收发作业前应哪些准备？