皮皮学，免费搜题
登录
搜题
【单选题】
使用擦除工具时,如果在擦除模式中选择内部擦除,这意味着( )A.
只擦除填充区域，不影响线段和文字
B.
只擦除当前选定的区域，线条和文字无论选中与否，均不受影响
C.
只擦除被擦除对象最先选中的填充区域，线条和文字均不受影响
D.
只擦除线条，填充区域和文字不受影响
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】某泡点进料的连续精馏塔中，进料组成x=0.35，系统的平均相对挥发度α=2.44，当x=0.88时，达到此分离要求的最小回流比R=（）
【单选题】Choose the best choice according to the cultural context. Your American friend tells you that his dog just died and that he is very sad. You should say:
A.
"I can't imagine how you must feel. "
B.
"I know how you feel. "
【单选题】某泡点进料的连续精馏塔中 ,进料组成 x=0.35,系统的平均相对挥发度 α=2.44, 当 xD=0.90 时 ,达到此分离要求的最小回流比 Rmin=( ).
A.
1.52
B.
1.62.
C.
1.72
D.
1.82
【单选题】Choose the best choice according to the cultural context. While you are talking with your American friend, she mentions that her grandmother died last year. You should say:
A.
"Oh, what a pity!"
B.
"I'm sorry to hear that."
【简答题】某泡点进料的连续精馏塔中 , 进料组成 =0.35, 系统的平均相对挥发度α =2.44, 当 =0.93 时 , 达到此分离要求的最小回流比 =____ .
【简答题】不虚此行 ! It's a r_______ trip!
【单选题】In brief, it is not possible to make recommendation regarding the supervision of adolescents that fit all contexts. The physical environment, the cultural context, and the personalities of those invol...
A.
restate their opinion
B.
summarize the main points
C.
make a recommendation
D.
make a prediction
【单选题】某泡点进料的连续精馏塔中 , 进料组成 =0.35, 系统的平均相对挥发度α =2.44, 当 =0.93 时 , 达到此分离要求的最小回流比 =____.
A.
1.90
B.
1.66
C.
1.81
D.
2.12
相关题目：