【单选题】下列关于生物材料检验的目的和作用正确的是
A.
了解内源性有害物质进入人体内的实际剂量及产生的效应水平
D.
检测化学物质原形及其代谢产物或由化学物质引起肌体产生的生物学效应指标
【单选题】In the passage the author wants the marketers to understand that__________
A.
advertising to children must stop
B.
a libertarian view in advertising is unethical
C.
advertising to children must have a clear purpose
D.
children must be treated differently when advertising
【简答题】背景 某全现浇塔楼住宅工程,地下2层、地上28层,建筑面积17656㎡。该工程项目周围为已建工程,NNIN地Nd,,现场道路按3m考虑并兼作消防车道,路基夯实,上铺150mm厚砂石,并做混凝土面层。搅拌机棚、砂石料只能在与已建工程之问的间隙堆放。现场布置两个消火栓,间距100m,其中一个距拟建建筑物4m,另一个距临时道路2.5m。供电设施已按照供电设计和施工总平面图布置完毕,施工现场临时用电配置,...
【判断题】自适应前照灯系统常用的高度调整电动机主要有直流电动机和交流电动机。
【单选题】某男性为红绿色盲患者,他的岳父表现正常,岳母是色盲,对他的子女表现型的预测,正确的是 ( )
【判断题】半自助游是指个人,家庭或者亲朋好友一起自行安排旅游行程但部分使用旅行社服务(如订房,订购交通票据等)的旅游活动》。()
【单选题】The author of the passage wants to tell that ______.
A.
In soccer and basketball, the ethnic tide is different.
B.
in Washington several games are played in one day
C.
Americans like all kinds of games
D.
the American games are watched by native-Americans and played by people from different countries
【判断题】自适应前照灯系统常用的高度调整电动机主要有直流电动机和步进电动机。