屏蔽泵的特点是()。
A.无泄漏
B.噪音小
C.效率高
D.占地小
参考答案:A, B, D
The people in the flat above are terribly noisy! I can't ________ it any longer. [ ]
A. keep up with
B. catch up with
C. come up with
D. put up with
关于体温的正常生理变动,哪项是正确的()
A.新生儿体温最稳定
B.老年人体温偏高
C.午后1~6时体温最低
D.通常成年女性的体温略低于男性
E.育龄期女性黄体期基础体温偏高