临时再保险的特点是什么？

下列食物中主要富含蛋白质的是[ ]

A．牛奶、蛋糕等

B．米饭、馒头等

C．饮料等

D．水果、蔬菜等

根据短文内容及所给首字母提示写出所缺单词, 并将完整单词填在下面对应题号后的横线上。

     Hello. I'm Tom. I'm a middle school student. It's nice to meet you here. First, let me tell you (1) s______

about my family. There are (2) f______ people in my family. They are my mother, my father, my sister, my

brother and me. My father is a worker. My mother is an English teacher. My sister is eighteen and my brother

is sixteen. I'm fourteen. We three go to the (3) s______school. We all enjoy (4) w______ football games. My (5) h______ is at West Street. There is a big tree and some small trees around my house. The big one is a pear

tree and the small ones are apple (6) t______, but there (7) a______ any pears or apples on them now.

(8) H______ is a photo of my house. In the photo, you can (9) s______ three cats in my house. They are all

black and white. We (10) l______ them very much.

某办公楼外墙厚度为360mm，从室内设计地面算起的埋置深度d=1.55m，基础顶面受到的上部结构传来的相应于荷载效应标准组合值为F=88kN／m（见图3.6.1.2）。修正后的地基土承载力特征值fa2=90kPa，室内外高差为0.45m。外墙基础采用灰土基础，H0=300mm，其上采用砖基础。

基础总高度为（）m。

A.0.78

B.0.48

C.0.9

D.0.6

大型螺杆压缩式制冷机组采用的冷媒，说法正确的应是下列哪些项？（）

A、制冷剂R134a、R407C、R410A不破坏臭氧层，但会产生温室效应

B、采用新技术，减少制冷剂氨的充注量并加强安全防护，可使氨制冷机组得到推广

C、在名义工况下，当压缩机排量相同时，R22为制冷剂的制冷机组的效率高于氨为制冷剂的制冷机组

D、在名义工况下，当压缩机排量相同时，氨为制冷剂的制冷机组的效率高于R134a为制冷剂的制冷机组

在水准测量中，若后视点A的读数大，前视点B的读数小，则有（）

A、A点比B点低

B、A点比B点高

C、A点与B点可能同高

D、A点、B点的高低取决于仪器高度