皮皮学，免费搜题
登录
搜题
【单选题】
下列属于天然乳化剂的是A.
蓍胶
B.
卖泽
C.
硬脂酸钠
D.
皂土
E.
氢氧化镁
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】专科医疗主要医学观是_______医学模式,全科医疗主要医学观是_________医学模式。
【单选题】The worker wasn't on duty that night. He shouldn't _____ the accident. [ ]
A.
see to
B.
see at
C.
see for
D.
see from
【简答题】CDR即为( )
【单选题】• Bell was nearly beaten to the patent office by (), who had independently developed a very similar telephone invention . A. Gray B. Morse C. Charles D. Reis
A.
Gray
B.
Morse
C.
Charles
D.
Reis
【简答题】____ granted bythe Patent Office, it becomes the inventor’s property and he or she can keepit, sell it, or assign it.A. Once a patent is B. When a patent C. A patent, once D. A patent, whenever it
is
【判断题】To obtain a patent, a person must prove to the patent office that his or her invention is novel, useful, and not obvious in light of contemporary technology.
A.
正确
B.
错误
【单选题】He wrote his first science papers while ______ in the patent office in Bern, Switzerland.
A.
work
B.
to work
C.
working
D.
worked
相关题目：