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【多选题】
光敏元器件例如光敏电阻、光敏二极管、光敏三极管等的主要特性包括()。A.
伏安特性
B.
光谱特性
C.
光照特性
D.
响应时间
E.
温度特性
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【单选题】In recent years, Israeli consumers have grown more demanding as they've become wealthier and more worldly-wise. Foreign travel is a national passion; this summer alone, one in 10 citizens will go abro...
A.
customer service in Israel is now improving.
B.
wealthy Israeli customers are hard to please.
C.
the tourist industry has brought chain stores to Israel.
D.
Israeli customers prefer foreign products to domestic ones.
【多选题】下列对B737描述正确的有()
A.
BBJ是B737系列中的公务机
B.
B737是双通道飞机
C.
B737-800有小翼
D.
B737在前有机型的基础上提高了载油量
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【简答题】保税物流三大功能
【简答题】The first Earth Hour was held in 2007 in Sydney, Australia when 2.2 million individuals(个体) and more than two thousand businesses turned their lights off for one hour to take a stand against climate c...
【简答题】类固醇是胆固醇及其衍生物，体内重要的类固醇包括胆固醇、胆固醇酯、______、胆汁酸和______等。
【简答题】Chinese are very generous in educating their children. Not caring about the money, parents often send their children to the best schools or even abroad to England, the United States and Australia. The...
【判断题】Unlike a tariff, quotas do not allow domestic monopolists to assert their monopoly pricing powers.
A.
正确
B.
错误
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