皮皮学，免费搜题
登录
搜题
【单选题】
嘌呤核苷酸从头合成的特点是A.
先合成嘌呤碱,再与磷酸核糖结合
B.
先合成嘌呤碱,再与氨基甲酰磷酸结合
C.
在磷酸核糖焦磷酸的基础上逐步合成嘌呤核苷酸
D.
在氨基甲酰磷酸基础逐步合成嘌呤核苷酸
E.
不消耗能量
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Which factor of the following affects not only the fuels combustion but also the engine’s maintenance?
A.
cetane number
B.
flash point
C.
viscosity
D.
setting point
【单选题】The engine block might also be referred to as the:
A.
oil pan
B.
piston ring.
C.
cylinder block
D.
camshaft
【简答题】Her_____like playing the piano.(parent)
【单选题】The latest science______ A. Suggests that there is no such thing as love among animals B. Questions the idea of the existence of love in animals C. Proves that animals ’ brain chemistry is much inferi...
A.
Suggests that there is no such thing as love among animals
B.
Questions the idea of the existence of love in animals
C.
Proves that animals ’ brain chemistry is much inferior to ours
D.
Indicates that love exists in many animals
【单选题】________________, also called the main propulsion plant，is the largest and most important one in the engine room.
A.
The main engine
B.
The auxiliary engine
C.
The propeller
D.
The generator
【单选题】Molly ______ nith her friends. [ ]
A.
like to play
B.
like playing
C.
likes playing
D.
likes play
【简答题】在下列各句的空格内填上一个适当的完整的单词，该词的首字母已给出。 小题1:Talking with her is like playing the lute to a cow. I don’t want to w__ __ my time. 小题2:Believe what I’ve told you! I never tell lies, I am h_______. 小题3:Tim was s...
相关题目：