普通消防站电绝缘装具应配备的数量为()。
A.2套/站
B.4套/站
C.6套/站
D.8套/站
参考答案:A
B.电容器对交流具有阻碍作用的原因是两板间的绝缘体电阻很大
C.在交流电路中,电阻、感抗、容抗可以同时存在
D.感抗、容抗和电阻一样,交流电通过它们做功时都是电能转化为内能
1) ______ the Oral Approach 2) ______ the Cognitive Approach 3) ______ the Communicative Approach 4) ______ the Audiolingnal Method 5) ______ the Direct Method a) The use of drills and pattern practice is one of its distinctive features. b) The practice techniques adopted in this approach generally consists of guided repetition and substitution activity. c) Written work should be graded. d) Role play and simulation activities are often thought to be one of the most effective ways of integrating language skills in the language classroom. e) It seeks the intellectual understanding by the learner of the language as a system.