皮皮学，免费搜题
登录
搜题
【单选题】
集装箱及国际集装、集装箱港口的快速发展阶段是（ ）。A.
2 0 世纪 50 年代
B.
20 世纪 60 年代
C.
20 世纪 70 年代
D.
20 世纪 80 年代
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】When the enzyme concentration is proportional to the reaction rate
A.
The active center of the enzyme is saturated by the substrate
B.
the reaction rate is the Vmax
C.
Enzyme concentration is much greater than substrate concentration
D.
Substrate concentration is much larger than enzyme concentration
E.
The reaction has just begun
【单选题】When the O 2 concentration is low, as in the peripheral tissues, H + is bound by hemoglobin and O 2 is _________.
A.
released
B.
retained
C.
bound
D.
split
【单选题】According to the passage, how does the concentration of alcohol in a fetus compare to that in the mother?
A.
The concentration is more.
B.
The concentration is less.
C.
The concentration is equal in amount.
D.
The concentration cannot be measured.
【单选题】Intense Concentration As with any subject, people learn faster when concentration is high and we're actively interested in learning. Being interested and relaxed helps too. In intensely verbal courses...
A.
How to learn faster than others.
B.
How to deal with pressure.
C.
What to do with interesting subject.
D.
How to relax oneself while studying.
相关题目：