皮皮学，免费搜题
登录
搜题
【单选题】
含巯基的氨基酸是A.
蛋氨酸
B.
丝氨酸
C.
半胱氨酸
D.
脯氨酸
E.
鸟氨酸
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
【简答题】数据完整性主要包括：实体完整性、（）和用户自定义完整性
【单选题】H e ’ d live in Shanghai and Nanjing, but he liked __________ and moved to Suzhou.
A.
both
B.
neither
C.
either
D.
none
【简答题】Before he came to Shanghai, he (live) in Beijing for ten years.
【单选题】Where are the test certificates，for wire rope used as cargo runners，and loose gear certificates usually maintained?
A.
With the Cargo Gear Register on the ship
B.
In the Official Log
C.
At the Coast Guard Marine Safety Office with the vessel's inspection records
D.
At the central records center of the agency testing the cargo gear
【单选题】下列化合物与溴加成反应时,速度从大到小的顺序是 (1) (CH 3 ) 2 CH=CH 2 (2) CH 2 =CH 2 -CH 2 CH 3 (3) CH 2 =CH-CH 2 Cl (4) CH 2 =CH-Cl
A.
1>2>3>4
B.
4>3>2>1
C.
1>2>4>3
D.
1>3>2>4
【单选题】We should test the steering gear each voyage. 02010498
A.
The steering gear should be tested each week.
B.
The steering gear should be tested each voyage.
C.
The steering gear should be tested month.
D.
The steering gear should be tested each day.
【简答题】Test your gear -Create a list of ________ -Know how each piece of equipment________
【单选题】Lucy told Mr. Lee that he in Shanghai in 2000.
A.
lives
B.
will live
C.
lived
D.
has lived
相关题目：