LPG与NG分别是指（）。
A、液化石油气与天然气
B、液化天然气与天然气
C、液化天然气与压缩天然气
D、天然气与冷态天然气
参考答案：A
Which of the following would the nurse expect to find in a client diagnosed with hyperparathyroidism
A. Hypocalcemia.B. Hypercalcemia.C. Hyperphosphatemia.D. Hypophosphaturi
模型装饰手段有几种？都是什么？
