导线压接后,不应使管口附近导线有()。
参考答案:隆起和松股
The defence lawyer was questioning the old man who was one of the________of the murder
committed last month.[ ]
A. observers
B. viewers
C. witnesses
D. audiences
生活饮用水水质标准(CJ3020—1993)规定一级水源水氨氮(以氮计)的含量为不得超过()。
A、1.0mg/L
B、0.1mg/L
C、0.5mg/L
D、0.05mg/L