有一浓度很稀的表面活性剂水溶液,在298K时用快速移动的刀片刮取溶液表面,测得表面活性剂的表面过剩量Γ=3.0×
10-6mol·m-2。已知298K时纯水的表面张力为0.072N·m-1,求该表面活性剂水溶液的表面张力。
10-6mol·m-2。已知298K时纯水的表面张力为0.072N·m-1,求该表面活性剂水溶液的表面张力。
第1题
A.Population
B.Sample
第2题
A.of seeing
B.for seeing
C.to seeing
D.to see
第3题
Thank you for your invitation. I am looking forward to ______ your hometown.
A.visiting
B.being visited
C.visit
D.visiting at
第4题
Thank you for your invitation. I am looking forward to ______ your hometown.
A.visiting
B.being visited
C.visit
D.visiting at
第5题
第6题
I am ________________your early coming.
A、looking forward to
B、 looking forward
C、 look forward to
第7题
A、get your email
B、receive your letter
C、receive your reply
D、hearing from you soon
第8题
I am looking forward to ______ your letter. (receive)
第9题
We are looking forward to your ______ inquiries.
A.specification B.special C.specify D.spectific
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