无烟煤结构致密机械强度大(),因此对粘结剂的()较小。
参考答案:孔度小,吸附性
患者,男,33岁。平素饮食不规律,近半年间断右上腹部疼痛。疼痛以饭前明显,进食可减轻,有夜间痛,并有反酸、嗳气。体检:腹部软,右上腹轻度压痛,未触及包块,肝脾未触及。诊断为()
A.慢性胃炎
B.慢性胆囊炎
C.胃溃疡
D.慢性胰腺炎
E.十二指肠溃疡
In relation to private companies, explain the meaning of, and the procedure for passing, the following:
(b) a written resolution. (5 marks)