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【多选题】
土设置棱体排水的作用有（ ）等。A.
增加上游坝坡的稳定
B.
减少通过坝基的渗流量
C.
降低浸润线
D.
防止坝坡冻胀和渗透变形
E.
保护下游坝脚不受尾水淘刷
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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.
【简答题】在纪念红军长征胜利80周年大会上的讲话主题可以概括为（），走好今天的长征路。
【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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