皮皮学，免费搜题
登录
搜题
【判断题】
如果在SDS-PAGE上看到一条条带，我们可以断定该蛋白的纯度已经达到100%。A.
正确
B.
错误
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
【单选题】By the time Mr. Saint Laurent set up shop in Paris under his own name, he had always worked as a (n)
A.
showman.
B.
artist.
C.
painter.
D.
designer.
【单选题】When Mr. Smith took over the company, it was already heavily______ and had no money to pay the workers.
A.
in danger
B.
in relief
C.
in debt
D.
in return
【单选题】水平角测量时，角值β =b-a。现知读数a为82°33′24″，读数b为102°42′12″，则角值β是【 】
A.
20°18′46″
B.
20°08′48″
C.
20°42′24″
D.
20°38′12″
【简答题】Mr. Lang worked in a factory. As a driver, he was busy. Sometimes, he brought some materials to the factory, and most of the time, he had to carry the goods to the customers of the factory. It was not...
【单选题】—You seem familiar with Mr. John? —Sure, we ______ together for three years in the 1990s.
A.
have worked
B.
had worked
C.
are working
D.
worked
【单选题】By the time Mr. Saint Laurent set up shop in Paris under his own name, be had always worked as a(n)
A.
showman.
B.
artist.
C.
painter.
D.
designer.
【单选题】水平角测量时，角值β=b-a。现知读数a为60°25'12'，读数b为187°47'36'，则角值口是( )。
A.
127°35'36'
B.
127°38'48'
C.
127°22'24'
D.
127°33'12'
【单选题】水平角测量时，角值β＝b－a。现已知读数a为182°33′24″，读数b为102°42′12″，则角值β是（ ）
A.
79°51′12″
B.
－280°08′48″
C.
280°08′48″
D.
－79°51′12″
相关题目：