预制空心板的堵头费用已包括在相应子目内,不另计算。
A. 正确
B. 错误
某药的置换价为1.6,当制备栓重2g、平均含药0.16g的10枚栓剂时,需加入基质可可豆脂()
A. 18g
B. 19g
C. 20g
D. 36g
E. 38g
依据《华电集团公司安全工器具管理规定(A版)》,下列属于辅助绝缘安全工器具的有()
A. 绝缘罩
B. 绝缘手套
C. 绝缘靴(鞋)
D. 绝缘胶垫
If the firing pressures in a diesel engine are high, although the exhaust temperatures are normal, the cause may be()
A. early injection timing
B. worn orifices in the injection nozzles
C. worn or scored cylinder liners
D. using a fuel with too low of a cetane number