实验室、办公室等用电场所如需增加电器设备,以下说法正确的是()
A.老师自行改装
B.须经学校有关部门批准,并由学校指派电工安装
C.学生可以私自改接
参考答案:B
---Could I swim here?
---____________. Look at the sign NO SWIMMING.
A.No, you couldn’t
B.Certainly, you could
C.Sorry, please don’t
D.Of course, you can
患者,男,因尿频、尿急、尿痛就诊,细菌学检查时最适宜的标本是()
A.随机尿
B. * * 口拭子
C.24h尿
D.清洁中段尿
E.晨尿