=（）。 
（单选题）
=（）。
A
B
C
D
正确答案
答案解析
由定积分计算
=
=
相似试题
（填空题）
The full title of the U.K. is the United Kingdom of （）and （）
（单选题）
public and private colleges and universities and community colleges offer（）.
（单选题）
（）is used for calling and replying,and for transmitting acknowleding and relaying distress alerts.
（单选题）
The way in which people address each other depends on their age, sex, social group and personal relationship. The English system of address forms frequently used includes first name, last name, title+last name, （）, and kin term.
（单选题）
Solid waste generation，and electricity and water consumption are costly and have their own set of environmental（）.
（单选题）
Whose duty is it to examine and verify the vessel’s classification and technical state and condition?（）.
（简答题）
画出该段指令程序对应的梯形图。 LD NOT 0000 LD 0001 AND 0002 LD NOT 0003 AND 0004 OR LD AND LD TIM 00 #0030 LD 0005 AND 0006 OR NOT 0007 OUT 0500
（单选题）
The safety of the port should（）in respect of a vessel properly manned and equipped，and navigated and handled without negligence and in accordance with good seamanship.
（单选题）
（）is responsible for the attraction, selection, training, assessment, and rewarding of employees, while also overseeing organizational leadership and culture, and ensuring compliance with employment and labor laws.
（单选题）
（）fore and aft decks and prepare for sea.
