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【多选题】
在紫菜生活史中,产生的孢子为( )。A.
外生孢子
B.
单孢子
C.
中性孢子
D.
紫菜
E.
壳孢子
F.
似亲孢子
G.
复大孢子
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【单选题】在万能卧式铣床上用三面刃铣刀铣削直角沟槽,若铣出的直角沟槽两侧面不平行,主要原因是()。
A.
铣刀转速偏高
B.
进给量偏大
C.
工作台零位未对准
D.
铣刀刀尖圆弧较大
【单选题】Dr. Trimble often heard students say that _________.
A.
their mind failed to work when faced with a test
B.
they had difficulty focusing on the test items
C.
they could not think of a way to get rid of test anxiety
D.
they began panicking well ahead of a test
【简答题】Connecting with Patients Dr. Paris often treats several generations of a family over many years. “He’s seen us through two births, one operation, multiple earaches, a broken wrist and a recovery from ...
【简答题】在万能卧式铣床上用三面刃铣刀铣削直角沟槽，若工作台零位未对准，铣出的直角沟槽会（）。
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