发动机从一个状态变到另一个状态的控制，称之为（） A.稳态控制 B.极限控制 C.随

T-2满液可以由（）引起。

A、E-9泄漏

B、E-5泄漏

C、E-8泄漏

D、E-6泄漏

单句语法填空，每空只填一词

小题1:The settlement is home to nearly 1, 000 people, many of         left their village homes for a better life in the city.

小题2:To stay awake, he finished a cup of coffee and ordered        .

小题3:The church tower which         _______ _______ (restore) will be open to tourists soon. The work is almost finished.

小题4:My uncle hesitated for a long time _______ he decided to buy a flat, as he was not quite sure whether the price of the house would go up or not.

小题5:Different methods to touch the keys will result _______ different display of the color.

配电变压器的中性点一般是直接接地，称( )接地。

A．保护

B．工作

C．箝位

D．隔离

打开指定文件夹下的演示文稿yswg01.ppt(如下图)，按下列要求完成操作并保存。

简述装具、器材和机具害虫密度的表示法。