（） are individuals and organizations that are actively involved in the project, or whose interests may be affected as a result of project execution or project completion.

流体惯性力与加速度方向相同。（　）

— Do you prefer a portable or a clumsy 3D printer?

—                      .

You can _____ some bottles of wine, or some chocolates, or a bunch of flowers.

A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.

A rectangular area that can contain a document, program, or message.

Graphic representations for a program, type of file, or function .

一洒水车以等加速度a向前平驶，如图示，则水车内自由表面与水平面间的夹角等于（）。