脂肪栓塞病人死亡原因常见于下列哪一种情况
A.急性右心衰竭
B.急性左心衰竭
C.肾功能衰竭
D.脑出血
E.心肌梗死
参考答案:A
—Mrs. King, could you tell me when we ______ a field trip?
—We'll have it when all the work ______.[ ]
A. are having; will finish
B. will have; finishes
C. will have; is finished
D. have had; will be finished
黄铜是()二元合金。
A.铜镍
B .铜锡
C.铜锌
D.铜铝