水磨石机宜在混凝土达到设计强度()时进行磨削作业。
A. 80%~90%
B. 70%~80%
C. 60%~70%
D. 50%~60%
测量ZP?Y2-18型移频自动闭塞电源盘"24V"测试孔,直流电压应为24V±0.2V,杂音电压应小于或等于50mV。
A. 正确
B. 错误
As there are several logging modes, which mode will a CIS router use when it stores log messages in Random Access Memory?()
A. syslog logging
B. console logging
C. buffered logging
D. terminal logging
患者,男,28岁。外出感寒,左肩臂痛,难以抬肩,遇风则疼痛加剧,舌苔薄白。首选药物是()
A. 羌活
B. 威灵仙
C. 独活
D. 桑寄生
E. 秦艽