能引起较严重贫血的疟疾是（） ["三日疟","间日疟","卵形疟","恶性疟","输血后疟症"]
安定性不良的水泥，在浆体硬化过程中或硬化后产生（）。 ["A、不均匀的体积膨胀","B、均匀的体积膨胀","C、不均匀的质量改变","D、均匀的质量改变"]
丁卡因脊麻的起效时间（） ["1～2min","3～4min","5～9min","10～15min","20min以上"]
传播疟疾的主要媒介是（） ["三带喙蚊","中华按蚊","淡色蚊","刺扰伊蚊","白蛉子"]
腰麻平面达T4，心率减慢的主要原因（） ["支配心脏交感神经节前纤维阻滞","血压下降","右房压下降","窦弓反射","肾上腺素能神经纤维阻滞"]
异地取土回填如何计算？
