在立焊位置气焊时,应采用比平焊时小()左右的火焰能率来进行焊接。
A.10%
B.25%
C.15%
D.30%
参考答案:C
用所给词的正确形式或首字母提示完成句子.
1. The radio is too ________( noise). Will you please turn it a bit down?
2. Mrs Green is _________ ( extreme) angry with her naughty son.
3. He went home late yesterday. But luckily he________ (catch) the last train.
4. The weather yesterday was_________( wind). You'd better put on your warm clothes.
5. He was __________ (happy) because he failed the exam.
6. I live in a building with lots of people. They are my n __________.
7.Zhang Yimou is the d _________ of " The love of the Hawthorn, Tree" (山楂树之恋 ) .
Be careful that you don't set the fireworks _____ by mistake.
[ ]
A. down
B. out
C. back
D. off