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搜题
【单选题】
肺癌死亡率进行增加的首要原因是A.
吸烟
B.
职业致癌因子
C.
空气污染
D.
电离辐射
E.
遗传因素
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举一反三
【单选题】In computing, passwords are commonly used to limit access to official users. Yet the widespread use of passwords has serious drawbacks. Office workers now have to remember an average of twelve system ...
A.
They do not ensure security.
B.
They are difficult to remember.
C.
They have to be changed frequently.
D.
They limit computer accessibility.
【单选题】Acanthocephalans are commonly called ( ).
A.
roundworms
B.
blood worms
C.
flatworms
D.
probosis worms
E.
spiny-headed worms
【单选题】政府采购是指各级国家机关、事业单位和团体组织,使用财政性资金采购依法制定的集中采购目录以内的或者采购限额标准以上的货物、工程和服务的行为。下列不属于政府采购方式的是()
A.
邀请招标
B.
议标
C.
询价
D.
公开招标
【多选题】What are the three types of antonyms that are commonly indentified?
A.
complementary antonyms
B.
modifiers
C.
gradable antonyms
D.
converse antonyms
【简答题】In informal speech, people often omit sentence subjects because they are commonly understood. What are the omitted subjects in the following two sentences? Why do people know that these are the correc...
【简答题】Highly sophisticated electronic key systems are commonly equipped to______.
【简答题】磁卡与智能卡的主要差别是什么?
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