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【判断题】
几种营养价值较低的蛋白质不宜混合使用。A.
正确
B.
错误
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举一反三
【单选题】设计一直动从动件盘形凸轮,当凸轮转速ω及从动件运动规律v=v(s)不变时,若αmax由40°减小到20°,则凸轮尺寸会 。
A.
增大
B.
减小
C.
不变
D.
没有关系
【简答题】阅读理解。 Everyone may play a joke on ① others on April Fool's Day ② . And my father did last April Fool's Day. It was Sunday and we were all sitting at the table when father suddenly smiled and said to u...
【单选题】It was nearly lunch time ______in the snow storm last night.
A.
to catch
B.
caught
C.
catching
D.
to be caught
【单选题】It was nearly lunch time _____ Henry began to feel bad .
A.
until
B.
that
C.
when
D.
while
【简答题】维生素E的抗氧化能力很强，能抑制细胞膜上的脂质过氧化作用。（ ）
【简答题】完形填空。 It was one of the hottest days of the dry season. We had not seen 1 _ for almost a month. The crops were dying. If it didn't rain soon, we would lose everything. At noon, when I was 2 lu...
【简答题】已知下三角矩阵A m*n 以行序为主序压缩存储于一维数组 B[n(n+1)/2+1]中,则 在B中的对应下标为___ , 在B中的对应下标为 ____ 。
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