人体体型也属于“型”的范围，以（胸腰落差）为依据把人体分成（）、（）、（）、（）四种

---Mike, do you enjoy your present job?

---            . I just do it for a living.

A．Of course

B．Not really

C．Not likely

D．Not a little

When choosing imported goods, people are _____  about all the different labels on food these days. [ ]

A. confused

B. confusing

C. frightening

D. frightened

响照片清晰度的主要因素是（）

A.管电流量

B.管电压

C.焦片距离

D.焦点尺寸

E.显影加工

CIF视频格式的图像分辨率为______。

A．352×240

B．352×288

C．640×480

D．320×240

精确制导技术