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【判断题】
没有坚持下去的痛苦会成为永远的痛苦。()A.
正确
B.
错误
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【简答题】RLC 串联电路发生谐振时,电路的总阻抗呈 (阻、容、感 )性。
【简答题】A computer’s main memory consists of numerous memory cells, each of which contains ________ bits. Each memory cell is identified by a numeric value called the cell’s _________.
【简答题】A computer’s main memory consists of numerous memory cells, each of which contains ________ bits. Each memory cell is identified by a numeric value called the cell’s _________.
【单选题】张女士，75岁，体型肥胖，平素不喜运动。2年前因行走后左膝关节疼痛到医院检查，诊断为“骨关节炎”。1日前外出时站立不稳跌倒，头部着地，送至医院治疗。你认为张女士跌倒的原因为
A.
生理因素
B.
病理因素
C.
药物因素
D.
心理因素
E.
环境因素
【单选题】Given the following requirements: Create a table to contain employee data, with a unique numeric identifier automatically assigned when a row is added, has an EDLEVEL column that permits only the valu...
A.
CREATE TABLE emp ( empno SMALLINT NEXTVAL GENERATED ALWAYS AS IDENTITY, firstname VARCHAR(30) NOT NULL, lastname VARCHAR(30) NOT NULL, workdept CHAR(3) NOT NULL, edlevel CHAR(1), PRIMARY KEY emp_pk (empno), FOREIGN KEY emp_workdept_fk ON (workdept) REFERENCES department (deptno), CHECK edlevel_ck VALUES (edlevel IN ('C','H','N')), );
B.
CREATE TABLE emp ( empno SMALLINT NOT NULL GENERATED BY DEFAULT AS IDENTITY, firstname VARCHAR(30) NOT NULL, lastname VARCHAR(30) NOT NULL, workdept CHAR(3), edlevel CHAR(1), CONSTRAINT emp_pk PRIMARY KEY (empno), CONSTRAINT emp_workdept_fk FOREIGN KEY (workdept) REFERENCES department (deptno), CONSTRAINT edlevel_ck CHECK edlevel VALUES ('C','H','N') );
C.
CREATE TABLE emp ( empno SMALLINT NEXTVAL GENERATED BY DEFAULT AS IDENTITY, firstname VARCHAR(30) NOT NULL, lastname VARCHAR(30) NOT NULL, workdept CHAR(3) NOT NULL, edlevel CHAR(1) CHECK IN ('C','H','N')), CONSTRAINT emp_pk PRIMARY KEY (empno), CONSTRAINT emp_workdept_fk FOREIGN KEY department (deptno) REFERENCES (workdept) );
D.
CREATE TABLE emp ( empno SMALLINT NOT NULL GENERATED BY DEFAULT AS IDENTITY, firstname VARCHAR(30) NOT NULL, lastname VARCHAR(30) NOT NULL, workdept CHAR(3), edlevel CHAR(1), CONSTRAINT emp_pk PRIMARY KEY (empno), CONSTRAINT emp_workdept_fk FOREIGN KEY (workdept) REFERENCES department (deptno), CONSTRAINT edlevel_ck CHECK (edlevel IN ('C','H','N')) );
【单选题】(17 ~19 题共用病例) 张女士,75岁,体型肥胖,平素不喜运动。2年前因行走后左膝关节疼痛到医院检查,诊断为“骨关节炎”。1日前外出时站立不稳跌倒,头部着地,送至医院治疗。 17.你认为张女士跌倒的原因为
A.
生理因素
B.
病理因素
C.
药物因素
D.
心理因素
E.
环境因素
【单选题】张女士,75岁,体型肥胖,平素不喜运动。2年前因行走后左膝关节疼痛到医院检查,诊断为“骨关节炎”1日前外出时站立不稳跌倒,头部着地,送至医院治疗。张女士目前应做的检查为
A.
头部CT检查
B.
头部X线检查
C.
心电图检查
D.
血常规检查
E.
关节X线检查
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