下列关系不正确的是()。
A、1巴=100KPA;
B、1Kcal=4.18J;
C、1ppm=0.0001%;
D、1巴=1.02Kg.f/cm2。
参考答案:B
Brown said he was by no means annoyed;_____ he was glad to be able to make himself clearly understood.
A.all in all
B.for one thing
C.on the contrary
D.by the way
医院物体表面污染与空气污染相比,其特点为()
A.均匀污染
B.不均匀污染
C.单一细菌污染
D.多种细菌污染
E.以上都不是