超深井使用的钻具,每()要对全部钻具进行一次检查。
A、半年
B、一年
C、钻完一口井
D、钻6000m
参考答案:C
John: _________
Jack: In two weeks.
John: Are you going to Japan?
Jack: No. I'm going to Australia. I went to Japan two years ago.
A.How long have you been here?
B.When is your holiday?
C.When are you leaving for Australia?
D.How long do you plan to stay here?
选择目标市场的基础是( )。
A.市场定位
B.市场细分
C.市场调查
D.市场策略制定