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【单选题】
()是人类最理想、最经济的热能来源,约占人体热能来源的60%~70%A.
动物蛋白
B.
薯类淀粉
C.
动物脂肪
D.
谷类淀粉
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皮皮学刷刷变学霸
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【简答题】TYJL-Ⅱ型计算机联锁系统车站控制台显示屏是通过主备机（）来反映联锁机的工作状态的。
【单选题】—What class are you in? —I’m in ____, ____.
A.
class Three; grade Seven
B.
Class Three; Grade Seven
C.
Grade three; Class seven
【单选题】—What class are you in? —I'm in ____ ____. [ ]
A.
Grade three; Class seven
B.
class Three; grade Seven
C.
Class Three; Grade Seven
【单选题】—What class are you in? —I'm in _____, _____. [ ]
A.
grade seven; class three
B.
class Three; grade Seven
C.
Class Three; Grade Seven
D.
Grade three; Class seven
【简答题】TYJL—II型计算机联锁系统车站控制台显示屏是通过（）状态来反映联锁机的工作状态的。
【单选题】I'm so hungry. Please give me _______ to eat. [ ]
A.
three breads
B.
three pieces of bread
C.
three pieces of breads
D.
three piece of bread
【判断题】According to M. A. K. Halliday, the three metafunctions of language are experiential metafunction, interpersonal metafunction and discourse metafunction. ()
A.
正确
B.
错误
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