进口粮食、原粮、化肥、硫磺、矿砂等散装货物,按照国际贸易惯例,必须在目的口岸承载货物的船舱内或在卸货过程中,按有关规定抽取代表性样品进行检验,应在口岸报检。 ( )
参考答案:对
— Do you know whether they talked about their work or their family?
— As matter of fact, I couldn’t hear it clearly, as they talked in whisper. [ ]
A. the, a
B. the, the
C. a; a
D. a; the
对于空分装置来说,空气中最危险的杂质是(甲烷)。()
A.乙烷
B.甲烷
C.灰尘
D.乙炔