空调系统联合试运转及调试，在夏季不得高于设℃计算温度（）
A.1℃
B.2℃
C.3℃
D.4℃
参考答案：B
(2013·高考江苏卷)—Could I use your car tomorrow morning?
—Sure.I________ a report at home.
A．will be writing
B．will have written
C．have written
D．have been writing
已知2.5号标准型圆钉，每千个重量为0.407kg，则每公斤有多少个数？
