传统冷菜装盘的基本步骤是垫底、围边和______。
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The author's knowledge of Tibet is probably ______.
A. based on firsthand experience
B. the result of lifelong studies
C. derived from books only
D. limited to geological history
燃烧中的两个重要概念是______。
A. 回火和自燃点
B. 爆炸极限和闪点
C. 闪点和自燃点
D. 回火和脱火
菜点价格的高低,应该服从______的原则。
A. 价格适应市场需求
B. 价格由经营者决定
C. 供大于求时提高价格
D. 价格与市场无关
The author takes a(an) ______ stance to the shift of names.
A. critical
B. objective
C. indifferent
D. sarcastic