车辆在高速公路上发生故障,应开启车上危险信号,夜间还须同时开启()和()。
参考答案:示宽灯;尾灯
女,48岁,外阴奇痒近5年。患病早期,外阴皮肤暗红,角化过度呈白色,以后逐渐增厚,皮肤纹理突出该病可能为()
A.外阴鳞状上皮细胞增生
B.外阴硬化性苔癣
C.外阴白癜风
D.外阴白化病
E.念珠菌 * * 炎
The companies are working together to create _____they hope will be the best means of transport in the 21st century.
A.which
B.that
C.what
D.Who