维修电工的操作应遵守的规定是什么？
参考答案：
必须按照市劳动局、供电局高低压管理操作规定，进行安装和操作。
* * 壁的构成是
A．横纹皱襞及弹力纤维B．纵纹皱襞及弹力纤维C．横纹皱襞及平滑肌纤维D．黏膜层、纤维层和脂肪层E．黏膜层、肌层和纤维层
—Look at the mobile phone. It is the latest one in our country.
—Can you tell me which country________?[ ]
A. is it
B. it is made
C. did you buy
D. it is made in
