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【简答题】
A.By listing women's responses to different parties. B.By discussing women's voting rights in democracies. C.By quoting the percentage of women officers in governments. D.By calling for women's voting rights in her own country.
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【单选题】The basic safety technologies of network communications don’t include ______.
A.
cryptography
B.
user authentication
C.
firewall
D.
WLAN
【简答题】(3分)金属在日常生活中应用广泛。 ⑴最初输水管材用铸铁,目前多用塑料管和塑料金属复合管,输送热水一般用铜管。下列管材中,属于金属材料的是____ __(填字母序号,下同)。 A.铸铁管               B.铜管            C.塑料管 (2分)铁虽然常温下与水不反应,但铁制品在潮湿的环境中容易生锈。某同学进行了如右图所示实验。一周以后发现铁钉表面锈蚀。图中a、b、c三处锈蚀...
【单选题】In the simplest terms the most basic safety rules to follow include ( ).
A.
Wearing proper PPE
B.
Insuring to conduct oneself in a safe manner
C.
Insuring to properly handle sample, chemical, glassware, and apparatus
D.
All above
【单选题】糖尿病患者服用降糖灵过量可造成
A.
代谢性酸中毒
B.
代谢性碱中毒+代谢性酸中毒
C.
呼吸性酸中毒+代谢性酸中毒
D.
代谢性碱中毒
E.
代谢性碱中毒+呼吸性酸中毒
【简答题】金属在日常生活中应用广泛。 ⑴最初输水管材用铸铁,目前多用塑料管和塑料金属复合管,输送热水一般用铜管。下列管材中,属于金属材料的是______(填字母序号,下同)。 铁虽然常温下与水不反应,但铁制品在潮湿的环境中容易生锈。某同学进行了如图所示实验。一周以后发现铁钉表面锈蚀。图中a、b、c三处锈蚀情况最严重的是________ (填字母),产生该现象的原因是__________。 铁虽然常温下与水不...
【简答题】金属在日常生活中应用广泛. (1)最初输水管材用铸铁,目前多用塑料管和塑料金属复合管,输送热水一般用铜管.如图1所示管材中,属于金属材料的是______(填字母序号,下同). A.铸铁管               B.铜管            C.塑料管 (2)铁虽然常温下与水不反应,但铁制品在潮湿的环境中容易生锈.某同学进行了如图2所示实验.一周以后发现铁钉表面锈蚀.图2a、b、c三处锈蚀情...
【单选题】以下属于非金属通风管道材料的是()
A.
塑料复合钢板
B.
玻璃钢
C.
普通薄钢板
D.
镀锌薄钢板
【简答题】It's important that you know some basic safety tips when you choose toys for your kids. Good toys are a great investment, but they just need to be safe. Believe it or not, there are quite a few er...
【简答题】The following basic safety guidelines will reduce the chance that students are injured in academic facilities ________ campus.
【多选题】Basic characteristics of safety problems is ( )
A.
Dependence
B.
Long term and arduousness
C.
Indirect benefit
D.
Relativity
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