干电池的锌筒是____极，碳棒是______极。_爱下问搜题

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问题填空题

干电池的锌筒是____极，碳棒是______极。

答案

负；正

选择题

Not only ___ robbed of , but he himself was badly beaten up.

A．was everything he had	B．had everything he been	C．everything he had was
D．everything he had been

多项选择题

蛔虫性肠梗阻特点

A．有阵发性腹痛和呕吐

B．腹部有多长条索状肿块，位置可变动

C．多见于2-10岁儿童

D．多见于20岁以上成年人

E．多为完全性肠梗阻