测量零件孔间距时,一般可用()等量具进行测量。
A.90°角
B.游标卡尺
C.钢直尺
D.卡钳
参考答案:B, C, D
急性脓胸变为慢性脓胸是指病程达到()
A.3~6周
B.6周~3个月
C.3周~2个月
D.3~6个月
E.6个月以上
—Would you like to go to the zoo with us?
—_______________. [ ]
A. Yes, I’d like
B. Yes, I do
C. Yes, I’d love to
D. No,I don’t