自然通风的动力是（）。A.风压 B.室内热上升气流 C.热压 D.风压与热压

Never before _______ the famous ancient garden was just a stone’s throw away from the hotel, so out _______.

A．had they known; went all they

B．they had known; went all they

C．had they known; they all went

D．they had known; they all went

热病后期，损及心阴而致心悸者，用（）

A.黄连温胆汤

B.生脉散

C.朱砂安神丸

D.黑锡丹

E.血府逐瘀汤

造成深覆盖的可能病因是（）

A.遗传因素引起的上、下颌发育不良或牙量骨量不调

B.长期口呼吸

C.吮指或咬下唇等不良习惯

D.牙萌出顺序异常

E.以上都是

片式元器件表面安装工艺流程中若有非片式元件其插装在（）。

A、片式元件贴装之前

B、片式元件贴装时同时插装

C、片式元件贴装、焊接后

D、片式元件贴装和固化胶沾剂之后

肠套叠可能出现的症状

A．腹痛、便血、腹部肿物
B．腹痛、发热、黄疸
C．大便习惯改变
D．急性弥漫性腹膜炎