油库、加油站清罐产生的污杂应由石油公司采取填埋或焚烧等方式进行处理。()
参考答案:错
解析:油库、加油站清罐产生的污杂应运送到环保部门指定地点进行处理,防止污染农田、水系等。
The most popular organic gem is the pearl. A pearl is the response of a marine mollusk to the presence of an irritating impurity accidentally introduced into its body; a cultured pearl is the result of the intentional insertion of a mother-of-pearl bead into a live mollusk. Whether introduced accidentally or intentionally, the pearl-making process is the same: the mollusk coats the irritant with a substance called nacre. Nacre is composed chiefly of calcium carbonate. Because very few natural pearls are now on the market, most pearls used in fine jewelry are cultured. These include "Biwa" pearls and most other freshwater pearls. Cultured pearls are not easily distinguished from natural pearls except by an expert.
Nacre is a substance that is________.
A.mechanically manufactured
B.the result of laboratory testing
C.organically secreted by the mollusk
D.present in the chemical composition of freshwater pounds
男性,48岁,右眼闭合不能、口角左偏1个月,右耳听力减退伴蝉鸣2周()。
A.右侧内囊病变
B.右侧中脑病变
C.右侧桥脑病变
D.右侧延髓病变
E.右侧小脑桥脑角病变