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【简答题】
某压力测量系统由压电式压力传感器-电荷放大器-记录仪组成。若压力传感器灵敏度为10PC/kPa，电荷放大器的灵敏度为0.5V/PC，记录仪的灵敏度为20mm/V，则系统总灵敏度为 。
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【单选题】患者，男性，41岁，于饱餐、饮酒后突然出现中上腹持久性剧烈疼痛伴反复恶心、呕吐出胆汁。查体腹壁压痛，腹壁轻度紧张，测血清淀粉酶明显增高。以下提示急性胰腺炎预后不良的是（ ）
A.
代谢性酸中毒
B.
代谢性碱中毒
C.
低钾血症
D.
低钙血症
E.
低镁血症
【单选题】患者,男性,41岁。于饱餐、饮酒后突然出现中上腹持久剧烈疼痛,伴有反复恶心,呕吐出胆汁。查体:上腹壁压痛,腹壁轻度紧张,测血清淀粉酶明显增高。以下提示急性胰腺炎预后不良的是
A.
代谢性酸中毒
B.
代谢性碱中毒
C.
低钾血症
D.
低钙血症
E.
低镁血症
【简答题】根据句意和首字母或汉意完成单词。 1. —What would you do if you had a million dollars? —I'd give it to c_________. 2. Pandas are Mary's f_________ animals. 3. He finds watching movies f_________ because the people spea...
【单选题】活塞本体的磨损主要发生在______。 I、活塞顶 II、裙部 III、环槽 IV、销座孔 V、环槽根部过渡圆角 VI、活塞加强筋
A.
Ⅰ+Ⅲ+Ⅳ
B.
Ⅱ+Ⅲ+Ⅳ
C.
Ⅱ+Ⅴ+Ⅵ
D.
Ⅰ+Ⅱ+Ⅲ
【单选题】20岁男患，因突然上腹疼伴剧烈呕吐24小时，体检：血压10/8kPa心电图示心肌损害，血尿淀粉酶增高，诊断急性坏死性胰腺炎。以下提示急性胰腺炎预后不良的是：（）
A.
手足抽搐
B.
脐部及腰部皮肤青紫色
C.
血尿淀粉酶明显增高
D.
代谢性酸中毒
【单选题】The example of tadpoles, fish eggs and waterfowl is used to show that the activities of man could give rise to ______.
A.
protecting the enviornment
B.
helping to balance nature
C.
negative chain reactions
D.
killing all the living things
【单选题】--- Would you have called her up _____ possible?
A.
- Yes, but I _____ busy doing my homework.
B.
had it been … was
C.
if it was … were
D.
if it had been … had been
E.
if it were … would be
【单选题】The regulatory activities of state governments included all of the following EXCEPT______.
A.
licensing of retail merchants
B.
inspecting materials used in turnpike maintenance
C.
imposing limits on price-fixing
D.
controlling of lumber
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