将分别盛有熔融的氯化钾、氯化镁、氧化铝的三个电解槽串联,在一定条件下通电一段时间 发布时间:2017-08-12 08:04 │ 来源:www.tikuol.com 题型:选择题 问题: 将分别盛有熔融的氯化钾、氯化镁、氧化铝的三个电解槽串联,在一定条件下通电一段时间后,析出钾、镁、铝的物质的量之比是[ ]A.1∶2∶3 B.3∶2∶1 C.6∶3∶1 D.6∶3∶2
题型:选择题 患者男,43岁。近几年来左侧腮腺数次肿痛,每年发作1~2次,抗感染治疗可控制。平常口内有时有咸味液体流出。检查腮腺导管口有少量分泌,尚清,该患者不宜实行的治疗是()。A.导管冲洗B.急性发作时全身抗感染治疗C.维生素C含服D.按摩腮腺腺体帮助排唾液E.腮腺切除术 查看答案
题型:选择题 用所给单词的适当形式填空 1. Can you give me your _________(explain) for your absence? 2. During the Spring holidays there are many _______ (culture)activities. 3. In America, we often greet people by ________(shake) hands or hugging. 4. I'll call you as soon as I ________(get to) New York. 5. Could you tell me some special customs that ________(not find) in Chinese culture? 查看答案