下列各组混合物能用分液漏斗分离的是
A.硝基苯和苯
B.苯和甲苯
C.甘油和水
D.溴苯和NaOH溶液
答案:D
In the face of _____ failure, it is vital that we should keep up _____ good state of mind.
A.a; /
B./; a
C.the; /
D./; the
穿衣对应的METs值为()
A.1.0
B.1.5
C.2.0
D.2.5
E.3.0