病毒性肝炎患者血清增高的乳酸脱氢酶的同工酶为()
A.LD1
B.LD2
C.LD3
D.LD4
E.LD5
参考答案:E
It’s said that there are plenty of hotels in Shanghai. There _____ be any difficulty for you to find somewhere to stay.
A.wouldn’t
B.shouldn’t
C.mustn’t
D.needn’t
自助餐台后方墙上需同时设置不少()条装饰隔板,最上层一个放置(),其余放置()皆可。