下列哪种蛋白不是由肝细胞合成的A．白蛋白 B．凝血酶原 C．前白蛋白 D．纤维蛋白原

根据短文内容及首字母提示在空白处填上适当的单词，使短文意思完整。

        Airplanes are the newest kind of transportation. From early times, people tried to f     1    through the

sky like birds. About 100 years a     2     , someone took the first ride on an airplane. This ride lasted for less

than one m     3   . These first planes were very s     4    , too. Only one o     5    two people could fly in

them at one time.

        Today these p     6    are very big and fast. H     7    of people can travel in them at one time. W     8    

them, people can get f     9    one side of the United States to the other in less than one day. Traveling is very

d   10   from the way it was 100 years ago.

1._____ 2._____ 3._____ 4._____  5._____

6._____ 7._____ 8._____ 9._____ 10._____

污泥发酵后体积缩减系数宜取( )。

A．0.6

B．0.4

C．0.8

D．0.2

（    ）的两个三角形一定能拼成一个平行四边形。

使用命令DECLAREmm(2，3)定义的数组，包含的数组元素(下标变量)的个数为 ______。

A．2个

B．3个

C．5个

D．6个

打开指定文件夹下的演示文稿yswg2(如下图所示)，按下列要求完成对此文稿的修饰并保存。

1．将演示文稿中第二张幻灯片移为文稿的最后一张幻灯片，将第三张幻灯片中的汽车设置效果为“从左侧缓慢进入”，文本部分设置为“底部飞入”，动画顺序先对象后文本。 2．将全部幻灯片切换效果设置为“向右擦除”，第一张幻灯片背景填充预设颜色为“雨后初晴”，横向。