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【单选题】
预防艾滋病母婴传播的有效措施是A.
禁止HIV感染者结婚
B.
提倡自然分娩
C.
鼓励母乳喂养
D.
给婴儿注射疫苗
E.
母亲在妊娠期及围产期、婴儿在出生后应用抗HIV药物
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【简答题】洋务派举办的规模最大的船舶修造厂A. 金陵机器制造局B. 福州船政局C.安庆内军械所 D.江南机器制造总局 B. 福州船政局 C. 安庆内军械所 D. 江南机器制造总局
【单选题】下列关于容积节流调速回路的说法中正确的是( )
A.
主要由定量和调速阀组成
B.
工作稳定，效率较高
C.
在较低的速度下工作时，运动稳定性不好
D.
比进、回油路节流调速两种回路的平稳性差、效率低。
【简答题】Questions 12 to 15 are based on the conversation you have just heard. 12. A) Most of her schoolmates are younger than she is. B) She simply has no idea what school to transfer to. C) There are too man...
【单选题】Your firm is producing a car battery that is safe to discard in normal household trash. All other batteries on the market contain chemicals that are harmful and that can pollute underground water supp...
A.
concentrated
B.
differentiated
C.
multisegment marketing
D.
undifferentiated
【简答题】A) Most of her schoolmates are younger than she is. B) She simply has no idea what school to transfer in. C) She worries she won’t fit in as a transfer student D) There are too many activities for her...
【简答题】Questions 12 to 15 are based on the conversation you have just heard. 12. A) Most of her schoolmates are younger than she is. B) She simply has no idea what school to transfer to. C) She worries she w...
【单选题】Car son argued that the regulations governing use of these chemicals were inadequate, though her positions were not as extreme as they are sometimes now presented. She did not support the complete ban...
A.
inefficient
B.
sponsored
C.
uncontrolled
D.
irrational
【简答题】There is a right time and a right place for 1 , but here comes a big caution: Driving. Driving a vehicle is a major responsibility. Driving a vehicle 2 should be the number one concern for every drive...
【单选题】容积节流调速回路的说法中正确的是________。
A.
主要由定量泵和调速阀组成
B.
工作稳定，效率较高
C.
在较低的速度下工作时，运动稳定性不好
D.
比进、回油节流调速两种调速回路的平稳性差、效率低
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