【单选题】在钢筋砼板的结构剖面图中,应标出的标高是( )标高。
【单选题】对葡萄球菌的培养特性叙述正确的是:
A.
营养要求高,必须在含有血液的培养基中才能生长
E.
耐盐性强,在含10%-15%Nacl的培养基中生长
【多选题】关于金黄色葡萄球菌形态、培养及生化特性描述正确的是( ) 。
B.
普通培养基上生长良好,因多产生色素,菌落呈金黄色等
C.
高盐培养基上生长较好,血平板上生长更佳,致病菌株多有溶血性
D.
分解葡萄糖、乳糖、麦芽糖、蔗糖,产酸不产气,致病菌株能分解甘露醇、产生凝固酶。
【单选题】The research object of international trade theory is ( )
A.
Resource allocation in a country
B.
Resource allocation issues within the two countries
C.
Regional resource allocation issues
D.
Worldwide resource allocation issues
【简答题】The research object of safety engineering is , and 。
【简答题】如图,抛物线 经过点A(1,0)和点P(3,4). 小题1:求此抛物线的解析式,写出抛物线与x轴的交点坐标和顶点坐标,并依此在所给平面直角坐标系中画出抛物线的大致图象; 小题2:若抛物线与 轴的另一个交点为B,现将抛物线向射线AP方向平移,使P点落在M点处,同时抛物线上的B点落在点D(BD∥PM)处.设抛物线平移前P、B之间的曲线部分与平移后M、D之间的曲线部分,与线段MP、BD所围成的面积为m,...
【单选题】葡萄球菌的培养特性是
D.
耐盐性强,可在含10%~15%NaCl的培养基中生长
【单选题】John Stewart M ill believe d that the research object of political economy wa s ( ).
A.
t he n ature of w ealth and its laws of production and d istribution
B.
r elations of production and its l aw of d evelopment
C.
t he production process of the substance
【单选题】Assuming that a vaccine against hepatitis C was developed. To evaluate the effectiveness of this vaccine, the population that should be selected as the research object is
A.
People infected with hepatitis C
B.
People with low incidence of hepatitis C
C.
People who have been infected with hepatitis C and have antibodies in their bodies
D.
High-risk population of hepatitis C
E.
People who have been infected with hepatitis B