薄煤层客户关注点主要包括以下几点()。
A、可靠性高
B、机身薄,机身短小
C、自动化能力的提升
D、过断层能力强
参考答案:A, B, C, D
Don't worry if you can't come to ______ party. I'll save _____ cake for you. [ ]
A. the; some
B. a; much
C. the; any
D. a; little
讲话类文稿的特点是什么?