Which compound is good for heart health? _____________
A. Flavonols
B. Tannin
C. Resverratrol
D. Vanillin
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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
脱模机构中的双脱模机构,即是推杆与推块同时推出塑件的脱模机构。()
A. 对
B. 错