安装737燃油箱盖板之前，要涂抹的油脂是（）
A.防腐油脂
B.防渗漏油脂
C.耐高温油脂
D.抗低温油脂
参考答案：A
下列各项中，( )不是构成产业的特点。
A．规模性
B．专业性
C．职业化
D．社会功能性
The fact that she was foreign made _____ difficult for her toget a job in that country. [ ]
A. go
B. much
C. that
D. it
