治疗急性心肌梗死首选() ["多巴胺","去甲肾上腺素","苯肾上腺素","硝苯地平","多巴酚丁胺+硝酸甘油"]
茄子苗期花芽分化时经历15℃以下的低温,容易形成()。 ["脐裂果","裂茄","变形果","双身茄"]
前列腺癌患者,首选下列哪种检查方法() ["99mTc-MIBI-SPECT","18F-FMISO-PET/CT","18F-FDG-PET/CT","11C-MET-PET/CT","18F-FLT-PET/CT"]
包工包料工程的预付款按合同约定拨付,原则上预付比例按合同金额()%确定。 ["A、40>x>10","B、45>x>15","C、30>x>10","D、35>x>15"]
切开茄子黄萎病病株的茎,可看到导管变为()。 ["白色","褐色","红色","灰黑色"]
什么活塞式压缩机的压缩比不能太大?