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【简答题】
某工程使用∮22螺纹钢总共1000t，由甲、乙、丙三个购买地获得，相关信息见表，试计算其材料预算价格。 采购保管费为2.5%，检验试验1%，卸车费6元/t。
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】An expert, together with some assistants, have been sent to help us with the project.
【简答题】静息电位的负值减小的状态称为 。
【单选题】An expert, together with some assistants, ___ sent to help with the work the other day. [ ]
A.
was
B.
were
C.
is
D.
are
【单选题】An expert, together with some assistants, ____ to help in this work.
A.
was sent
B.
were sent
C.
is sending
D.
are sending
【多选题】（133—135题共用备选答案）
A.
极化
B.
去极化
C.
超极化
D.
反极化
E.
复极化 133.细胞兴奋时膜内电位负值减小称为 134.安静时细胞膜两侧内负外正的状态称为 135.膜内电位数值由静息电位向负值增大方向变化称为
【单选题】An expert, together with some scientists ______to help in the work.
A.
was sent
B.
were sent
C.
has sent
D.
have sent
【单选题】下列说法正确的是（）
A.
静息电位增大称为去极化
B.
静息电位减小称为超极化
C.
去极化至零电位后膜电位如进一步变为正值，称为复极化
D.
静息电位存在时细胞膜电位外正内负的状态称极化
E.
去极化后在向静息电位方向恢复的过程为反极化
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