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【判断题】
光合反应中心的中心色素分子可以是叶绿素a，也可以是叶绿素b。A.
正确
B.
错误
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】关于适中温度,错误的描述是
A.
指一种适宜的环境温度
B.
指一种适宜的人体温度
C.
在保证新生儿正常体温的前提下
D.
同时使机体氧气消耗最低
E.
同时使机体能量消耗最低
【简答题】Fill in the blanks with the expressions given. Change the form where necessary. 1. We will be ______ glad to help you with your problems. 2. Volunteers are invited to ______ with those who want to l...
【单选题】The Admiralty Notices to Mariners can be obtained ____ by Masters of vessels from any Admiralty Chart Agent.
A.
with no responsibility
B.
free of charge
C.
without limitations of discharging
D.
with little charges
【简答题】车子上有凹陷了如何处理
【简答题】In America, the school day usually starts at 9a.m. and finishes at about 4 p.m. The school subjects different from ours. In China, we always _____ Chinese, math, English, P.E. and so on. But in Americ...
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