便携式渗透探伤器材中一般不包括()
A、渗透液
B、乳化液
C、显像剂
D、清洗液
参考答案:B
Although Jack has made good preparations for the match, he is still about his chance of winning.
A.stubborn
B.dynamic
C.sceptical
D.straightforward
联系实际说明日本商人的谈判风格。