| At least 2.3 million people took some
kind of online course in 2004, according to a recent survey by The Sloan
Consortium, an online education group, and two-thirds of colleges offering
"face-to-face" courses also offer online ones. But what were once two distinct
types of classes are looking more and more alike--and often dipping into the
same pool of students. At some schools, online courses--originally intended for nontraditional students living far from campus--have proved surprisingly popular with on-campus students. A recent study by South Dakota’s Board of Regents found 42 percent of the students enrolled in its distance-education courses weren’t so distant: they were located on campus at the university that was hosting the online course. Numbers vary depending on the policies of particular colleges, but other schools also hav A. Colleges may take different policies in online courses. B. Some schools allow students to mix online and face-to-face credits. C. Students choose online courses for different purposes. D. Online courses are much easier to pass than traditional course. [单选题]当双侧电源线路两侧重合闸均投入检查同期方式时，将造成( )。
A. 两侧重合闸均起动 B. 非同期合闸 C. 两侧重合闸均不起动 D. 一侧重合闸起动，另一侧不起动 [单项选择]为降低乳香对胃的刺激性，常采用的炮制方法是（）
A. 净制 B. 炒炭 C. 醋炙 D. 蜜炙 E. 抢水洗 [单选题]动车组供电状态下，( )进入车底作业。
A.不得 B.可以 C.必须 D.视情况 [多项选择]下列各项中，按照增值税法律制度的有关规定，不得开具增值税专用发票的有( )。
A. 在境外销售应税劳务 B. 销售报关出口的货物 C. 将自产货物用于集体福利 D. 转让非专利技术 [填空题]电动启闭卷帘门,升降速度应在（ ）范围内。
[判断题]吹扫、擦洗电机外壳和可见部分，电机外表清洁无污物
A.正确 B.错误 [单选题]IPv4 最后一个选项字段( option )是可变长的可选信息,该字段最大长度是?( )【单选题】
A.10B B.40B C.60B D.20B [单项选择]有头疽的病程一般需要（）。
A. 1周 B. 10日 C. 半个月 D. 1个月 E. 3个月 [多项选择]《女职工劳动保护特别规定》的内容包括（）。
A. 婚恋保护 B. 产期保护 C. 哺乳期保护 D. 孕期保护 [简答题]起重机的吊钩通常有铸造吊钩、锻造吊钩和板钩三种。（）
[单项选择]颗粒剂的粒度应控制在
A. 一号筛和二号筛之间 B. 一号筛和四号筛之间 C. 一号筛和三号筛之间 D. 二号筛和四号筛之间 E. 二号筛和三号筛之间 [判断题]为保证安全，线路检修工作应优先考虑停电作业。
A.正确 B.错误 我来回答: 提交
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