题目内容

What gives red wines their red or purple hue? _____________

A. Flavonols
B. Tannin
C. Resverratrol
D. Anthocyyanins

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更多问题

Which compound is good for heart health? _____________

A. Flavonols
B. Tannin
C. Resverratrol
D. Vanillin

Which of the following is a "noble grape" of Alsace? _____________

A. Chardonnay
B. Chasselas
C. Pinot Blanc
D. Riesling

二级（二次）推出机构即为顺序推出机构。（）

A. 对
B. 错

通常推出元件为推杆、推管、推块时，需设置复位机构。（）

A. 对
B. 错