对新装及运行中电能表进行（）和（）现场校准，以保证计量用电能表误差的在正常范围内，保证计量装置准确性。
参考答案：临时；周期
– Do you know __________ the iPhone 4 yesterday?
–Sorry, I have no idea about it.
A．how much did he pay for
B．how much he paid for
C．he paid for how much
D．he paid how much for
8月男婴，反复二次皮肤脓疱疹，伴发热已五天，近一天呕吐，呈喷射状，且抽搐一次，诊断为化脓性脑膜炎，给大剂量青霉素治疗7天后停药，近几日发现头围增大，前囟门隆起，叩诊头颅呈破壶声，两眼球向下看似落日，应考虑诊断
A．并发硬膜下积液B．并脑室管膜炎C．并脑积水D．并发脑脓肿E．发生了颅内肿瘤
