Pandy试验中,试管内出现灰白色云雾状浑浊,结果应判断为()。
A.阴性(-)
B.可疑(±)
C.阳性(+)
D.阳性(++)
E.阳性(+++)
参考答案:C
Stay in touch with people _____ you really care about and _____ really care about you.
A.who..who
B.whom..whom
C.who...whom
D.which...that
为保证各楼层的窗户上下对齐,应在外墙吊铅垂线,标示窗口的中心线或外边线。