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【判断题】
当立体表面的投影有集聚性时，求贯穿点的方法与直线和特殊位置平面相交求交点的方法形同。A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】According to Paragraph 3, food makers are reluctant to give up solid fats in baked goods in that
A.
they contribute to people's health.
B.
they are partially hydrogenated.
C.
they are highly saturated.
D.
they provide pleasant texture and taste.
【单选题】带电作业应设专责监护人。监护人不得直接操作。监护的范围不得超过（）作业点。复杂或高杆塔作业必要时应增设（塔上）监护人。
A.
一个；
B.
一个及以上；
C.
两个及以下；
D.
限定的
【单选题】What is a distinguishing feature of most naturally occurring fats?
A.
All organisms share an equal ratio of saturated and unsaturated fatty acids.
B.
Nearly all naturally occuring unsaturated fats have cis double bonds.
C.
Most unsaturated fats have trans double bonds,causing a kink in the hydrocarbon chain wherever they occur.
D.
They all share four fused rings as a carbon skeleton.
【判断题】Fats are classifed as a saturated fat and an unsaturated fat and the former is solid and the latter is liquid .
A.
正确
B.
错误
【简答题】Fats are a solid form of a group of molecules called___________________ .
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