【单选题】Don’ t leave anything ________ the walkways and stairs. It is dangerous. A. on the way to B. in the way of C. by the way D. in this way
【简答题】那格列奈是一种新型的餐时血糖调节剂,适用于2型糖尿病。其合成路线如下 已知: 请回答: (1)有机物A蒸气密度是相同状态下氢气密度的74倍,A分子中碳元素的质量分数是氢元素质量分数的10倍,A的1个分子中含有1个氧原子,A中含氧官能团的名称为_________;A的分子式为___________。 (2)A的结构满足以下条件: ① 含有苯环,苯环上有两个取代基 ② 苯环上的一溴取代物只有两种 ③ ...
【单选题】名字服务、事务服务、时间服务和安全性服务是()提供的服务
【单选题】名字服务、事务服务、时间服务和安全性服务是( )提供的服务。
【单选题】当船舶横倾角小于稳性消失角时,如果此时外力矩消失,船舶将()。
【多选题】“Sewage” as defined in MARPOL Annex IV means:()
A.
Drainage and other wastes from any form of toilet and urinals
B.
Drainage from medical premises (dispensary, sick bay, etc. via wash basin, wash tubsand scuppers located in such premises
C.
Drainage from spaces containing living animals
D.
Other waste waters when mixed with the drainage defined above
【单选题】Annex IV of MARPOL 73/78 contains regulations for the prevention of _____.
B.
pollution by noxious liquid substances carried in bulk
C.
pollution by sewage from ships
D.
pollution by garbage from ships
【单选题】名字服务、事务服务、时间服务和安全性服务是( )提供的服务。
【单选题】It is certain that the way people communicate is the way they live.
【单选题】当船舶横倾角小于稳性消失角时,如果此时外力矩消失,船舶将( )。