皮皮学，免费搜题
登录
搜题
【单选题】
从组织提取液中沉淀活性蛋白质而又不使之变性的方法是加入A.
硫酸铵
B.
三氯醋酸
C.
氯化汞
D.
钨酸
E.
浓 HCl
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】Though it had promise, in the end the project failed for three main reasons: the cost of building the enormous machine; the complexity of working with wood; and Hughes’s perfectionist approach, ______...
【单选题】—Don' t you think it nec essary that he to Miami but to New York? —I agree, but the problem i s that he has refused to.
A.
will not be sent;
B.
not be sent;
C.
can not be sent;
D.
should not send;
【单选题】Thousands of people took part in the work when the Three Gorges project (三峡工程) _____.
A.
was built
B.
was building
C.
was being built
D.
had been built
【单选题】在编辑样条曲线时,以下哪项要使用控制柄的选项来控制? ( ) (A)
A.
在样条曲线上的一段一段的点
B.
完全弯曲的样条曲线
C.
完全张紧的样条曲线
D.
在多条样条曲线间产生连接的点
【单选题】Tom received an invitation from Carrol but he ______. A. refused to go to the party B. refused her C. refused her to the party D. refusing to go
A.
refused to go to the party
B.
refuse her
C.
refused her to the party
D.
refusing to go
【简答题】Thousands of people took part in the work when the Three Gorges project (三峡工程) _____.
【单选题】在编辑样条曲线时,以下哪项要使用控制柄的选项来控制? ( )
A.
在样条曲线上的一段一段的点
B.
完全弯曲的样条曲线
C.
完全张紧的样条曲线
D.
在多条样条曲线间产生连接的点
【单选题】The Three Gorges Project is a hydroelectric dam that spans the Yangtze River by the town of __________, in the Yiling District of Yichang, Hubei province.
A.
HUangniu Rock
B.
Sandouping
C.
Mt Maogong
D.
Xiling gorge
相关题目：
【单选题】在编辑样条曲线时,以下哪项要使用控制柄的选项来控制? ( ) (A)
A.
在样条曲线上的一段一段的点
B.
完全弯曲的样条曲线
C.
完全张紧的样条曲线
D.
在多条样条曲线间产生连接的点