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【单选题】
下列有关肺源性心脏病和心力衰竭的说法哪错误的A.
肺源性心脏病者肺动脉压均超过正常范围
B.
以右心力衰竭为主
C.
少数患者也可见左心力衰竭
D.
反复肺部感染，细菌毒素对心肌的毒性作用可促进心力衰竭
E.
心肌缺氧，乳酸堆积，高能磷酸键合成降低，使心肌功能受损
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【简答题】已知int i;float f;,下列正确的语句是() A.(int f)%i; B.int(f)%i; C.int(f%i); D.(int)f%i;
【简答题】You ought to drive very cautiously on such a ______ day. (fog)
【单选题】Some diesel engines are supercharged with a （）
A.
slam charger
B.
turbocharger
C.
fuel atomizer
D.
fuel injector
【单选题】In fog you observe your radar and determine that risk of collision exists with a vessel which is 2 miles off your port bow. You should ______.
A.
stop your engines
B.
sound the danger signal at two-minute intervals
C.
hold course and speed until the other vessel is sighted
D.
take avoiding action as soon as possible
【单选题】All diesel engines are classified as（）.
A.
four cycle
B.
compression ignition
C.
vacuum ignition
D.
external combustion
【单选题】When you experience and observe your inflection point, you should stop your career at once.
A.
Y
B.
N
C.
NG
【单选题】Diesel engines are started by supplying into the cylinders in the appropriate sequence for the required direction.
A.
cooling water
B.
compressing air
C.
compressed air
D.
cylinder oil
【单选题】When you do an experiment, it is important that you have ____ patience to observe and record ___ whole process of the experiment [ ]
A.
a ; a
B.
the; the
C.
the ; a
D.
/; the
【简答题】（9分）目前世界上比较先进的电解制碱技术是离子交换膜法。 （1）电解前，如果粗盐中SO 4 2 ˉ含量较高，必须添加试剂除去SO 4 2 ˉ，则按添加试剂顺序，依次发生反应的离子方程式为 。 （2）补齐下列电解饱和食盐水制烧碱的离子方程式： ______________________ __________________________________ （反应物） ...
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