皮皮学，免费搜题
登录
搜题
【判断题】
结合酶中，酶蛋白单独存在时，不具有酶活力。A.
正确
B.
错误
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】Each member country of WTO must ______ its laws and regulations and compete on the principle of
A.
23. Each member country of WTO must ______ its laws and regulations and compete on the principle of fairness and co-operation. A．cater to
B.
correspond to
C.
relate to
D.
submit to
【单选题】What is the minimum time that a doctor must study before practising alone?
A.
8 years.
B.
11 years.
C.
15 years.
相关题目：