【单选题】A study is conducted of patients who are infected with hepatitis virus A, B, C, D, or E. The patients are categorized according to the type of virus and are followed over the next 10 years. They recei...
【多选题】(教材对话原文) Michael: They are testing the 3D printer. Don’t you come and see it? Lucas: What? Never heard of it. Michael: It is one of the most latest technological innovations. Lucas: Really?{A; B; C; D...
B.
Maybe its functions are questionable
D.
What are the main functions of it?
E.
In fact, it is as big as an oven
【简答题】Questions 3 and 4 are based on the news report you have just heard. 3. A) Testing the efficiency of the new solar panel. B) Providing clean energy to five million people. C) Generating electric power ...
【判断题】电流对人体的伤害程度与电流的大小、频率、通电时间、电压的高低等有关。
【判断题】电流通过人体内部,对人体伤害的程度与通过人体电流的大小、持续时间、途径、电流的频率以及人体的健康状况等多种因素有关。
【单选题】社会工作者邵蓉经过调研和分析,发现社区有一些青少年整天游手好闲,对生活没有明确的目标,对职业生涯缺少规划。为此,邵蓉设计了一个“职业生涯规划”小组,招募到15名社区青少年参加。通过两个多月的小组活动,这批青少年的态度和行为有了改变,自信心明显增强,家长和邻居也给予充分肯定,且每个人都制订了详细的个人职业发展规划,并开始付诸实施。邵蓉在上述小组活动中扮演的角色是( )。
【判断题】触电对人体的伤害程度,与流过人体电流的频率、大小,通电时间的长短,电流流过人体的路径,以及触电者本身的情况有关