肢端青紫症的发病因素不包括()
A.衰弱
B.免疫
C.内分泌疾病
D.寒冷
E.焦虑
参考答案:B
Here is the tower, ______ top you can have a good view of the whole city.
A.from whose
B.from its
C.over whose
D.whose
下列中,不属科学堆码方式的是()。
A、通风式
B、散堆式
C、货架堆码法
D、垛堆法